51720207

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1237}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 86521344

約数和(自身を除く): 34801137

約数列:

[1, 3, 7, 11, 21, 33, 77, 181, 231, 543, 1237, 1267, 1991, 3711, 3801, 5973, 8659, 13607, 13937, 25977, 40821, 41811, 95249, 223897, 285747, 671691, 1567279, 2462867, 4701837, 7388601, 17240069, 51720207]

約数ペア:

[(1, 51720207), (3, 17240069), (7, 7388601), (11, 4701837), (21, 2462867), (33, 1567279), (77, 671691), (181, 285747), (231, 223897), (543, 95249), (1237, 41811), (1267, 40821), (1991, 25977), (3711, 13937), (3801, 13607), (5973, 8659)]