64921780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{42157}}^1$

素因数の和:42184

約数の個数: 48

約数和(自身を含む): 169981056

約数和(自身を除く): 105059276

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 42157, 84314, 168628, 210785, 295099, 421570, 463727, 590198, 843140, 927454, 1180396, 1475495, 1854908, 2318635, 2950990, 3246089, 4637270, 5901980, 6492178, 9274540, 12984356, 16230445, 32460890, 64921780]

約数ペア:

[(1, 64921780), (2, 32460890), (4, 16230445), (5, 12984356), (7, 9274540), (10, 6492178), (11, 5901980), (14, 4637270), (20, 3246089), (22, 2950990), (28, 2318635), (35, 1854908), (44, 1475495), (55, 1180396), (70, 927454), (77, 843140), (110, 590198), (140, 463727), (154, 421570), (220, 295099), (308, 210785), (385, 168628), (770, 84314), (1540, 42157)]