21000577660

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{251143}}^1$

素因数の和:251302

約数の個数: 48

約数和(自身を含む): 45694143936

約数和(自身を除く): 24693566276

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 113, 148, 185, 226, 370, 452, 565, 740, 1130, 2260, 4181, 8362, 16724, 20905, 41810, 83620, 251143, 502286, 1004572, 1255715, 2511430, 5022860, 9292291, 18584582, 28379159, 37169164, 46461455, 56758318, 92922910, 113516636, 141895795, 185845820, 283791590, 567583180, 1050028883, 2100057766, 4200115532, 5250144415, 10500288830, 21000577660]

約数ペア:

[(1, 21000577660), (2, 10500288830), (4, 5250144415), (5, 4200115532), (10, 2100057766), (20, 1050028883), (37, 567583180), (74, 283791590), (113, 185845820), (148, 141895795), (185, 113516636), (226, 92922910), (370, 56758318), (452, 46461455), (565, 37169164), (740, 28379159), (1130, 18584582), (2260, 9292291), (4181, 5022860), (8362, 2511430), (16724, 1255715), (20905, 1004572), (41810, 502286), (83620, 251143)]