257963760

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:320

約数の個数: 240

約数和(自身を含む): 925610400

約数和(自身を除く): 667646640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 109, 114, 120, 144, 152, 171, 173, 180, 190, 218, 228, 240, 285, 304, 327, 342, 346, 360, 380, 436, 456, 519, 545, 570, 654, 684, 692, 720, 760, 855, 865, 872, 912, 981, 1038, 1090, 1140, 1308, 1368, 1384, 1520, 1557, 1635, 1710, 1730, 1744, 1962, 2071, 2076, 2180, 2280, 2595, 2616, 2736, 2768, 3114, 3270, 3287, 3420, 3460, 3924, 4142, 4152, 4360, 4560, 4905, 5190, 5232, 6213, 6228, 6540, 6574, 6840, 6920, 7785, 7848, 8284, 8304, 8720, 9810, 9861, 10355, 10380, 12426, 12456, 13080, 13148, 13680, 13840, 15570, 15696, 16435, 16568, 18639, 18857, 19620, 19722, 20710, 20760, 24852, 24912, 26160, 26296, 29583, 31065, 31140, 32870, 33136, 37278, 37714, 39240, 39444, 41420, 41520, 49305, 49704, 52592, 56571, 59166, 62130, 62280, 65740, 74556, 75428, 78480, 78888, 82840, 93195, 94285, 98610, 99408, 113142, 118332, 124260, 124560, 131480, 147915, 149112, 150856, 157776, 165680, 169713, 186390, 188570, 197220, 226284, 236664, 248520, 262960, 282855, 295830, 298224, 301712, 339426, 358283, 372780, 377140, 394440, 452568, 473328, 497040, 565710, 591660, 678852, 716566, 745560, 754280, 788880, 848565, 905136, 1074849, 1131420, 1183320, 1357704, 1433132, 1491120, 1508560, 1697130, 1791415, 2149698, 2262840, 2366640, 2715408, 2866264, 3224547, 3394260, 3582830, 4299396, 4525680, 5374245, 5732528, 6449094, 6788520, 7165660, 8598792, 10748490, 12898188, 13577040, 14331320, 16122735, 17197584, 21496980, 25796376, 28662640, 32245470, 42993960, 51592752, 64490940, 85987920, 128981880, 257963760]

約数ペア:

[(1, 257963760), (2, 128981880), (3, 85987920), (4, 64490940), (5, 51592752), (6, 42993960), (8, 32245470), (9, 28662640), (10, 25796376), (12, 21496980), (15, 17197584), (16, 16122735), (18, 14331320), (19, 13577040), (20, 12898188), (24, 10748490), (30, 8598792), (36, 7165660), (38, 6788520), (40, 6449094), (45, 5732528), (48, 5374245), (57, 4525680), (60, 4299396), (72, 3582830), (76, 3394260), (80, 3224547), (90, 2866264), (95, 2715408), (109, 2366640), (114, 2262840), (120, 2149698), (144, 1791415), (152, 1697130), (171, 1508560), (173, 1491120), (180, 1433132), (190, 1357704), (218, 1183320), (228, 1131420), (240, 1074849), (285, 905136), (304, 848565), (327, 788880), (342, 754280), (346, 745560), (360, 716566), (380, 678852), (436, 591660), (456, 565710), (519, 497040), (545, 473328), (570, 452568), (654, 394440), (684, 377140), (692, 372780), (720, 358283), (760, 339426), (855, 301712), (865, 298224), (872, 295830), (912, 282855), (981, 262960), (1038, 248520), (1090, 236664), (1140, 226284), (1308, 197220), (1368, 188570), (1384, 186390), (1520, 169713), (1557, 165680), (1635, 157776), (1710, 150856), (1730, 149112), (1744, 147915), (1962, 131480), (2071, 124560), (2076, 124260), (2180, 118332), (2280, 113142), (2595, 99408), (2616, 98610), (2736, 94285), (2768, 93195), (3114, 82840), (3270, 78888), (3287, 78480), (3420, 75428), (3460, 74556), (3924, 65740), (4142, 62280), (4152, 62130), (4360, 59166), (4560, 56571), (4905, 52592), (5190, 49704), (5232, 49305), (6213, 41520), (6228, 41420), (6540, 39444), (6574, 39240), (6840, 37714), (6920, 37278), (7785, 33136), (7848, 32870), (8284, 31140), (8304, 31065), (8720, 29583), (9810, 26296), (9861, 26160), (10355, 24912), (10380, 24852), (12426, 20760), (12456, 20710), (13080, 19722), (13148, 19620), (13680, 18857), (13840, 18639), (15570, 16568), (15696, 16435)]