21268660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3533}}^1$

素因数の和:3592

約数の個数: 48

約数和(自身を含む): 52246656

約数和(自身を除く): 30977996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3533, 6020, 7066, 14132, 17665, 24731, 35330, 49462, 70660, 98924, 123655, 151919, 247310, 303838, 494620, 607676, 759595, 1063433, 1519190, 2126866, 3038380, 4253732, 5317165, 10634330, 21268660]

約数ペア:

[(1, 21268660), (2, 10634330), (4, 5317165), (5, 4253732), (7, 3038380), (10, 2126866), (14, 1519190), (20, 1063433), (28, 759595), (35, 607676), (43, 494620), (70, 303838), (86, 247310), (140, 151919), (172, 123655), (215, 98924), (301, 70660), (430, 49462), (602, 35330), (860, 24731), (1204, 17665), (1505, 14132), (3010, 7066), (3533, 6020)]