812540720

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{277}}^1\times {\mathrm{991}}^1$

素因数の和:1318

約数の個数: 80

約数和(自身を含む): 1949184768

約数和(自身を除く): 1136644048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 277, 296, 370, 554, 592, 740, 991, 1108, 1385, 1480, 1982, 2216, 2770, 2960, 3964, 4432, 4955, 5540, 7928, 9910, 10249, 11080, 15856, 19820, 20498, 22160, 36667, 39640, 40996, 51245, 73334, 79280, 81992, 102490, 146668, 163984, 183335, 204980, 274507, 293336, 366670, 409960, 549014, 586672, 733340, 819920, 1098028, 1372535, 1466680, 2196056, 2745070, 2933360, 4392112, 5490140, 10156759, 10980280, 20313518, 21960560, 40627036, 50783795, 81254072, 101567590, 162508144, 203135180, 406270360, 812540720]

約数ペア:

[(1, 812540720), (2, 406270360), (4, 203135180), (5, 162508144), (8, 101567590), (10, 81254072), (16, 50783795), (20, 40627036), (37, 21960560), (40, 20313518), (74, 10980280), (80, 10156759), (148, 5490140), (185, 4392112), (277, 2933360), (296, 2745070), (370, 2196056), (554, 1466680), (592, 1372535), (740, 1098028), (991, 819920), (1108, 733340), (1385, 586672), (1480, 549014), (1982, 409960), (2216, 366670), (2770, 293336), (2960, 274507), (3964, 204980), (4432, 183335), (4955, 163984), (5540, 146668), (7928, 102490), (9910, 81992), (10249, 79280), (11080, 73334), (15856, 51245), (19820, 40996), (20498, 39640), (22160, 36667)]