81145220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{461}}^1\times {\mathrm{677}}^1$

素因数の和:1160

約数の個数: 48

約数和(自身を含む): 184182768

約数和(自身を除く): 103037548

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 461, 677, 922, 1354, 1844, 2305, 2708, 3385, 4610, 5993, 6770, 8801, 9220, 11986, 13540, 17602, 23972, 29965, 35204, 44005, 59930, 88010, 119860, 176020, 312097, 624194, 1248388, 1560485, 3120970, 4057261, 6241940, 8114522, 16229044, 20286305, 40572610, 81145220]

約数ペア:

[(1, 81145220), (2, 40572610), (4, 20286305), (5, 16229044), (10, 8114522), (13, 6241940), (20, 4057261), (26, 3120970), (52, 1560485), (65, 1248388), (130, 624194), (260, 312097), (461, 176020), (677, 119860), (922, 88010), (1354, 59930), (1844, 44005), (2305, 35204), (2708, 29965), (3385, 23972), (4610, 17602), (5993, 13540), (6770, 11986), (8801, 9220)]