64996880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{62497}}^1$

素因数の和:62523

約数の個数: 40

約数和(自身を含む): 162744792

約数和(自身を除く): 97747912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 62497, 124994, 249988, 312485, 499976, 624970, 812461, 999952, 1249940, 1624922, 2499880, 3249844, 4062305, 4999760, 6499688, 8124610, 12999376, 16249220, 32498440, 64996880]

約数ペア:

[(1, 64996880), (2, 32498440), (4, 16249220), (5, 12999376), (8, 8124610), (10, 6499688), (13, 4999760), (16, 4062305), (20, 3249844), (26, 2499880), (40, 1624922), (52, 1249940), (65, 999952), (80, 812461), (104, 624970), (130, 499976), (208, 312485), (260, 249988), (520, 124994), (1040, 62497)]