81980260

素因数分解:

$2^2\times 5^1\times {\mathrm{1201}}^1\times {\mathrm{3413}}^1$

素因数の和:4623

約数の個数: 24

約数和(自身を含む): 172352376

約数和(自身を除く): 90372116

約数列:

[1, 2, 4, 5, 10, 20, 1201, 2402, 3413, 4804, 6005, 6826, 12010, 13652, 17065, 24020, 34130, 68260, 4099013, 8198026, 16396052, 20495065, 40990130, 81980260]

約数ペア:

[(1, 81980260), (2, 40990130), (4, 20495065), (5, 16396052), (10, 8198026), (20, 4099013), (1201, 68260), (2402, 34130), (3413, 24020), (4804, 17065), (6005, 13652), (6826, 12010)]