20180354920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1123}}^1\times {\mathrm{40841}}^1$

素因数の和:41986

約数の個数: 64

約数和(自身を含む): 49578920640

約数和(自身を除く): 29398565720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1123, 2246, 4492, 5615, 8984, 11230, 12353, 22460, 24706, 40841, 44920, 49412, 61765, 81682, 98824, 123530, 163364, 204205, 247060, 326728, 408410, 449251, 494120, 816820, 898502, 1633640, 1797004, 2246255, 3594008, 4492510, 8985020, 17970040, 45864443, 91728886, 183457772, 229322215, 366915544, 458644430, 504508873, 917288860, 1009017746, 1834577720, 2018035492, 2522544365, 4036070984, 5045088730, 10090177460, 20180354920]

約数ペア:

[(1, 20180354920), (2, 10090177460), (4, 5045088730), (5, 4036070984), (8, 2522544365), (10, 2018035492), (11, 1834577720), (20, 1009017746), (22, 917288860), (40, 504508873), (44, 458644430), (55, 366915544), (88, 229322215), (110, 183457772), (220, 91728886), (440, 45864443), (1123, 17970040), (2246, 8985020), (4492, 4492510), (5615, 3594008), (8984, 2246255), (11230, 1797004), (12353, 1633640), (22460, 898502), (24706, 816820), (40841, 494120), (44920, 449251), (49412, 408410), (61765, 326728), (81682, 247060), (98824, 204205), (123530, 163364)]