78456980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{9187}}^1$

素因数の和:9264

約数の個数: 48

約数和(自身を含む): 191404416

約数和(自身を除く): 112947436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 4270, 8540, 9187, 18374, 36748, 45935, 64309, 91870, 128618, 183740, 257236, 321545, 560407, 643090, 1120814, 1286180, 2241628, 2802035, 3922849, 5604070, 7845698, 11208140, 15691396, 19614245, 39228490, 78456980]

約数ペア:

[(1, 78456980), (2, 39228490), (4, 19614245), (5, 15691396), (7, 11208140), (10, 7845698), (14, 5604070), (20, 3922849), (28, 2802035), (35, 2241628), (61, 1286180), (70, 1120814), (122, 643090), (140, 560407), (244, 321545), (305, 257236), (427, 183740), (610, 128618), (854, 91870), (1220, 64309), (1708, 45935), (2135, 36748), (4270, 18374), (8540, 9187)]