16520020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1231}}^1$

素因数の和:1312

約数の個数: 48

約数和(自身を含む): 38497536

約数和(自身を除く): 21977516

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1231, 1342, 2462, 2684, 3355, 4924, 6155, 6710, 12310, 13420, 13541, 24620, 27082, 54164, 67705, 75091, 135410, 150182, 270820, 300364, 375455, 750910, 826001, 1501820, 1652002, 3304004, 4130005, 8260010, 16520020]

約数ペア:

[(1, 16520020), (2, 8260010), (4, 4130005), (5, 3304004), (10, 1652002), (11, 1501820), (20, 826001), (22, 750910), (44, 375455), (55, 300364), (61, 270820), (110, 150182), (122, 135410), (220, 75091), (244, 67705), (305, 54164), (610, 27082), (671, 24620), (1220, 13541), (1231, 13420), (1342, 12310), (2462, 6710), (2684, 6155), (3355, 4924)]