205221718

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{677}}^1$

素因数の和:912

約数の個数: 32

約数和(自身を含む): 338294880

約数和(自身を除く): 133073162

約数列:

[1, 2, 13, 26, 89, 131, 178, 262, 677, 1157, 1354, 1703, 2314, 3406, 8801, 11659, 17602, 23318, 60253, 88687, 120506, 151567, 177374, 303134, 783289, 1152931, 1566578, 2305862, 7893143, 15786286, 102610859, 205221718]

約数ペア:

[(1, 205221718), (2, 102610859), (13, 15786286), (26, 7893143), (89, 2305862), (131, 1566578), (178, 1152931), (262, 783289), (677, 303134), (1157, 177374), (1354, 151567), (1703, 120506), (2314, 88687), (3406, 60253), (8801, 23318), (11659, 17602)]