28331280

素因数分解:

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

素因数の和:166

約数の個数: 180

約数和(自身を含む): 101338380

約数和(自身を除く): 73007100

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, 180, 190, 218, 228, 240, 285, 304, 327, 342, 360, 361, 380, 436, 456, 545, 570, 654, 684, 720, 722, 760, 855, 872, 912, 981, 1083, 1090, 1140, 1308, 1368, 1444, 1520, 1635, 1710, 1744, 1805, 1962, 2071, 2166, 2180, 2280, 2616, 2736, 2888, 3249, 3270, 3420, 3610, 3924, 4142, 4332, 4360, 4560, 4905, 5232, 5415, 5776, 6213, 6498, 6540, 6840, 7220, 7848, 8284, 8664, 8720, 9810, 10355, 10830, 12426, 12996, 13080, 13680, 14440, 15696, 16245, 16568, 17328, 18639, 19620, 20710, 21660, 24852, 25992, 26160, 28880, 31065, 32490, 33136, 37278, 39240, 39349, 41420, 43320, 49704, 51984, 62130, 64980, 74556, 78480, 78698, 82840, 86640, 93195, 99408, 118047, 124260, 129960, 149112, 157396, 165680, 186390, 196745, 236094, 248520, 259920, 298224, 314792, 354141, 372780, 393490, 472188, 497040, 590235, 629584, 708282, 745560, 786980, 944376, 1180470, 1416564, 1491120, 1573960, 1770705, 1888752, 2360940, 2833128, 3147920, 3541410, 4721880, 5666256, 7082820, 9443760, 14165640, 28331280]

約数ペア:

[(1, 28331280), (2, 14165640), (3, 9443760), (4, 7082820), (5, 5666256), (6, 4721880), (8, 3541410), (9, 3147920), (10, 2833128), (12, 2360940), (15, 1888752), (16, 1770705), (18, 1573960), (19, 1491120), (20, 1416564), (24, 1180470), (30, 944376), (36, 786980), (38, 745560), (40, 708282), (45, 629584), (48, 590235), (57, 497040), (60, 472188), (72, 393490), (76, 372780), (80, 354141), (90, 314792), (95, 298224), (109, 259920), (114, 248520), (120, 236094), (144, 196745), (152, 186390), (171, 165680), (180, 157396), (190, 149112), (218, 129960), (228, 124260), (240, 118047), (285, 99408), (304, 93195), (327, 86640), (342, 82840), (360, 78698), (361, 78480), (380, 74556), (436, 64980), (456, 62130), (545, 51984), (570, 49704), (654, 43320), (684, 41420), (720, 39349), (722, 39240), (760, 37278), (855, 33136), (872, 32490), (912, 31065), (981, 28880), (1083, 26160), (1090, 25992), (1140, 24852), (1308, 21660), (1368, 20710), (1444, 19620), (1520, 18639), (1635, 17328), (1710, 16568), (1744, 16245), (1805, 15696), (1962, 14440), (2071, 13680), (2166, 13080), (2180, 12996), (2280, 12426), (2616, 10830), (2736, 10355), (2888, 9810), (3249, 8720), (3270, 8664), (3420, 8284), (3610, 7848), (3924, 7220), (4142, 6840), (4332, 6540), (4360, 6498), (4560, 6213), (4905, 5776), (5232, 5415)]