21731340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8423}}^1$

素因数の和:8478

約数の個数: 48

約数和(自身を含む): 62270208

約数和(自身を除く): 40538868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8423, 16846, 25269, 33692, 42115, 50538, 84230, 101076, 126345, 168460, 252690, 362189, 505380, 724378, 1086567, 1448756, 1810945, 2173134, 3621890, 4346268, 5432835, 7243780, 10865670, 21731340]

約数ペア:

[(1, 21731340), (2, 10865670), (3, 7243780), (4, 5432835), (5, 4346268), (6, 3621890), (10, 2173134), (12, 1810945), (15, 1448756), (20, 1086567), (30, 724378), (43, 505380), (60, 362189), (86, 252690), (129, 168460), (172, 126345), (215, 101076), (258, 84230), (430, 50538), (516, 42115), (645, 33692), (860, 25269), (1290, 16846), (2580, 8423)]