20409515

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{653}}^1$

素因数の和:731

約数の個数: 32

約数和(自身を含む): 30136320

約数和(自身を除く): 9726805

約数列:

[1, 5, 7, 19, 35, 47, 95, 133, 235, 329, 653, 665, 893, 1645, 3265, 4465, 4571, 6251, 12407, 22855, 30691, 31255, 62035, 86849, 153455, 214837, 434245, 583129, 1074185, 2915645, 4081903, 20409515]

約数ペア:

[(1, 20409515), (5, 4081903), (7, 2915645), (19, 1074185), (35, 583129), (47, 434245), (95, 214837), (133, 153455), (235, 86849), (329, 62035), (653, 31255), (665, 30691), (893, 22855), (1645, 12407), (3265, 6251), (4465, 4571)]