28207520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:115

約数の個数: 144

約数和(自身を含む): 77220864

約数和(自身を除く): 49013344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 47, 55, 62, 80, 88, 94, 110, 121, 124, 155, 160, 176, 188, 220, 235, 242, 248, 310, 341, 352, 376, 440, 470, 484, 496, 517, 605, 620, 682, 752, 880, 940, 968, 992, 1034, 1210, 1240, 1364, 1457, 1504, 1705, 1760, 1880, 1936, 2068, 2420, 2480, 2585, 2728, 2914, 3410, 3751, 3760, 3872, 4136, 4840, 4960, 5170, 5456, 5687, 5828, 6820, 7285, 7502, 7520, 8272, 9680, 10340, 10912, 11374, 11656, 13640, 14570, 15004, 16027, 16544, 18755, 19360, 20680, 22748, 23312, 27280, 28435, 29140, 30008, 32054, 37510, 41360, 45496, 46624, 54560, 56870, 58280, 60016, 64108, 75020, 80135, 82720, 90992, 113740, 116560, 120032, 128216, 150040, 160270, 176297, 181984, 227480, 233120, 256432, 300080, 320540, 352594, 454960, 512864, 600160, 641080, 705188, 881485, 909920, 1282160, 1410376, 1762970, 2564320, 2820752, 3525940, 5641504, 7051880, 14103760, 28207520]

約数ペア:

[(1, 28207520), (2, 14103760), (4, 7051880), (5, 5641504), (8, 3525940), (10, 2820752), (11, 2564320), (16, 1762970), (20, 1410376), (22, 1282160), (31, 909920), (32, 881485), (40, 705188), (44, 641080), (47, 600160), (55, 512864), (62, 454960), (80, 352594), (88, 320540), (94, 300080), (110, 256432), (121, 233120), (124, 227480), (155, 181984), (160, 176297), (176, 160270), (188, 150040), (220, 128216), (235, 120032), (242, 116560), (248, 113740), (310, 90992), (341, 82720), (352, 80135), (376, 75020), (440, 64108), (470, 60016), (484, 58280), (496, 56870), (517, 54560), (605, 46624), (620, 45496), (682, 41360), (752, 37510), (880, 32054), (940, 30008), (968, 29140), (992, 28435), (1034, 27280), (1210, 23312), (1240, 22748), (1364, 20680), (1457, 19360), (1504, 18755), (1705, 16544), (1760, 16027), (1880, 15004), (1936, 14570), (2068, 13640), (2420, 11656), (2480, 11374), (2585, 10912), (2728, 10340), (2914, 9680), (3410, 8272), (3751, 7520), (3760, 7502), (3872, 7285), (4136, 6820), (4840, 5828), (4960, 5687), (5170, 5456)]