90381520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{66457}}^1$

素因数の和:66487

約数の個数: 40

約数和(自身を含む): 222501384

約数和(自身を除く): 132119864

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 66457, 132914, 265828, 332285, 531656, 664570, 1063312, 1129769, 1329140, 2259538, 2658280, 4519076, 5316560, 5648845, 9038152, 11297690, 18076304, 22595380, 45190760, 90381520]

約数ペア:

[(1, 90381520), (2, 45190760), (4, 22595380), (5, 18076304), (8, 11297690), (10, 9038152), (16, 5648845), (17, 5316560), (20, 4519076), (34, 2658280), (40, 2259538), (68, 1329140), (80, 1129769), (85, 1063312), (136, 664570), (170, 531656), (272, 332285), (340, 265828), (680, 132914), (1360, 66457)]