40008905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 52907904

約数和(自身を除く): 12898999

約数列:

[1, 5, 17, 53, 83, 85, 107, 265, 415, 535, 901, 1411, 1819, 4399, 4505, 5671, 7055, 8881, 9095, 21995, 28355, 44405, 74783, 96407, 150977, 373915, 470693, 482035, 754885, 2353465, 8001781, 40008905]

約数ペア:

[(1, 40008905), (5, 8001781), (17, 2353465), (53, 754885), (83, 482035), (85, 470693), (107, 373915), (265, 150977), (415, 96407), (535, 74783), (901, 44405), (1411, 28355), (1819, 21995), (4399, 9095), (4505, 8881), (5671, 7055)]