21133720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31079}}^1$

素因数の和:31107

約数の個数: 32

約数和(自身を含む): 50349600

約数和(自身を除く): 29215880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31079, 62158, 124316, 155395, 248632, 310790, 528343, 621580, 1056686, 1243160, 2113372, 2641715, 4226744, 5283430, 10566860, 21133720]

約数ペア:

[(1, 21133720), (2, 10566860), (4, 5283430), (5, 4226744), (8, 2641715), (10, 2113372), (17, 1243160), (20, 1056686), (34, 621580), (40, 528343), (68, 310790), (85, 248632), (136, 155395), (170, 124316), (340, 62158), (680, 31079)]