64908520

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{16729}}^1$

素因数の和:16837

約数の個数: 32

約数和(自身を含む): 147558600

約数和(自身を除く): 82650080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 16729, 33458, 66916, 83645, 133832, 167290, 334580, 669160, 1622713, 3245426, 6490852, 8113565, 12981704, 16227130, 32454260, 64908520]

約数ペア:

[(1, 64908520), (2, 32454260), (4, 16227130), (5, 12981704), (8, 8113565), (10, 6490852), (20, 3245426), (40, 1622713), (97, 669160), (194, 334580), (388, 167290), (485, 133832), (776, 83645), (970, 66916), (1940, 33458), (3880, 16729)]