64660895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1277}}^1$

素因数の和:1355

約数の個数: 32

約数和(自身を含む): 90175680

約数和(自身を除く): 25514785

約数列:

[1, 5, 13, 19, 41, 65, 95, 205, 247, 533, 779, 1235, 1277, 2665, 3895, 6385, 10127, 16601, 24263, 50635, 52357, 83005, 121315, 261785, 315419, 680641, 994783, 1577095, 3403205, 4973915, 12932179, 64660895]

約数ペア:

[(1, 64660895), (5, 12932179), (13, 4973915), (19, 3403205), (41, 1577095), (65, 994783), (95, 680641), (205, 315419), (247, 261785), (533, 121315), (779, 83005), (1235, 52357), (1277, 50635), (2665, 24263), (3895, 16601), (6385, 10127)]