20904552640

素因数分解:

$2^6\times 5^1\times {\mathrm{83}}^1\times {\mathrm{787069}}^1$

素因数の和:787169

約数の個数: 56

約数和(自身を含む): 50378776560

約数和(自身を除く): 29474223920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 160, 166, 320, 332, 415, 664, 830, 1328, 1660, 2656, 3320, 5312, 6640, 13280, 26560, 787069, 1574138, 3148276, 3935345, 6296552, 7870690, 12593104, 15741380, 25186208, 31482760, 50372416, 62965520, 65326727, 125931040, 130653454, 251862080, 261306908, 326633635, 522613816, 653267270, 1045227632, 1306534540, 2090455264, 2613069080, 4180910528, 5226138160, 10452276320, 20904552640]

約数ペア:

[(1, 20904552640), (2, 10452276320), (4, 5226138160), (5, 4180910528), (8, 2613069080), (10, 2090455264), (16, 1306534540), (20, 1045227632), (32, 653267270), (40, 522613816), (64, 326633635), (80, 261306908), (83, 251862080), (160, 130653454), (166, 125931040), (320, 65326727), (332, 62965520), (415, 50372416), (664, 31482760), (830, 25186208), (1328, 15741380), (1660, 12593104), (2656, 7870690), (3320, 6296552), (5312, 3935345), (6640, 3148276), (13280, 1574138), (26560, 787069)]