28418680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{613}}^1$

素因数の和:704

約数の個数: 64

約数和(自身を含む): 68522400

約数和(自身を除く): 40103720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 380, 488, 610, 613, 760, 1159, 1220, 1226, 2318, 2440, 2452, 3065, 4636, 4904, 5795, 6130, 9272, 11590, 11647, 12260, 23180, 23294, 24520, 37393, 46360, 46588, 58235, 74786, 93176, 116470, 149572, 186965, 232940, 299144, 373930, 465880, 710467, 747860, 1420934, 1495720, 2841868, 3552335, 5683736, 7104670, 14209340, 28418680]

約数ペア:

[(1, 28418680), (2, 14209340), (4, 7104670), (5, 5683736), (8, 3552335), (10, 2841868), (19, 1495720), (20, 1420934), (38, 747860), (40, 710467), (61, 465880), (76, 373930), (95, 299144), (122, 232940), (152, 186965), (190, 149572), (244, 116470), (305, 93176), (380, 74786), (488, 58235), (610, 46588), (613, 46360), (760, 37393), (1159, 24520), (1220, 23294), (1226, 23180), (2318, 12260), (2440, 11647), (2452, 11590), (3065, 9272), (4636, 6130), (4904, 5795)]