20199451240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11743867}}^1$

素因数の和:11743921

約数の個数: 32

約数和(自身を含む): 46505717280

約数和(自身を除く): 26306266040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11743867, 23487734, 46975468, 58719335, 93950936, 117438670, 234877340, 469754680, 504986281, 1009972562, 2019945124, 2524931405, 4039890248, 5049862810, 10099725620, 20199451240]

約数ペア:

[(1, 20199451240), (2, 10099725620), (4, 5049862810), (5, 4039890248), (8, 2524931405), (10, 2019945124), (20, 1009972562), (40, 504986281), (43, 469754680), (86, 234877340), (172, 117438670), (215, 93950936), (344, 58719335), (430, 46975468), (860, 23487734), (1720, 11743867)]