18987840

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{347}}^1$

素因数の和:389

約数の個数: 168

約数和(自身を含む): 68945760

約数和(自身を除く): 49957920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 32, 36, 38, 40, 45, 48, 57, 60, 64, 72, 76, 80, 90, 95, 96, 114, 120, 144, 152, 160, 171, 180, 190, 192, 228, 240, 285, 288, 304, 320, 342, 347, 360, 380, 456, 480, 570, 576, 608, 684, 694, 720, 760, 855, 912, 960, 1041, 1140, 1216, 1368, 1388, 1440, 1520, 1710, 1735, 1824, 2082, 2280, 2736, 2776, 2880, 3040, 3123, 3420, 3470, 3648, 4164, 4560, 5205, 5472, 5552, 6080, 6246, 6593, 6840, 6940, 8328, 9120, 10410, 10944, 11104, 12492, 13186, 13680, 13880, 15615, 16656, 18240, 19779, 20820, 22208, 24984, 26372, 27360, 27760, 31230, 32965, 33312, 39558, 41640, 49968, 52744, 54720, 55520, 59337, 62460, 65930, 66624, 79116, 83280, 98895, 99936, 105488, 111040, 118674, 124920, 131860, 158232, 166560, 197790, 199872, 210976, 237348, 249840, 263720, 296685, 316464, 333120, 395580, 421952, 474696, 499680, 527440, 593370, 632928, 791160, 949392, 999360, 1054880, 1186740, 1265856, 1582320, 1898784, 2109760, 2373480, 3164640, 3797568, 4746960, 6329280, 9493920, 18987840]

約数ペア:

[(1, 18987840), (2, 9493920), (3, 6329280), (4, 4746960), (5, 3797568), (6, 3164640), (8, 2373480), (9, 2109760), (10, 1898784), (12, 1582320), (15, 1265856), (16, 1186740), (18, 1054880), (19, 999360), (20, 949392), (24, 791160), (30, 632928), (32, 593370), (36, 527440), (38, 499680), (40, 474696), (45, 421952), (48, 395580), (57, 333120), (60, 316464), (64, 296685), (72, 263720), (76, 249840), (80, 237348), (90, 210976), (95, 199872), (96, 197790), (114, 166560), (120, 158232), (144, 131860), (152, 124920), (160, 118674), (171, 111040), (180, 105488), (190, 99936), (192, 98895), (228, 83280), (240, 79116), (285, 66624), (288, 65930), (304, 62460), (320, 59337), (342, 55520), (347, 54720), (360, 52744), (380, 49968), (456, 41640), (480, 39558), (570, 33312), (576, 32965), (608, 31230), (684, 27760), (694, 27360), (720, 26372), (760, 24984), (855, 22208), (912, 20820), (960, 19779), (1041, 18240), (1140, 16656), (1216, 15615), (1368, 13880), (1388, 13680), (1440, 13186), (1520, 12492), (1710, 11104), (1735, 10944), (1824, 10410), (2082, 9120), (2280, 8328), (2736, 6940), (2776, 6840), (2880, 6593), (3040, 6246), (3123, 6080), (3420, 5552), (3470, 5472), (3648, 5205), (4164, 4560)]