16980700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:427

約数の個数: 72

約数和(自身を含む): 41247360

約数和(自身を除く): 24266660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 43, 44, 50, 55, 86, 100, 110, 172, 215, 220, 275, 359, 430, 473, 550, 718, 860, 946, 1075, 1100, 1436, 1795, 1892, 2150, 2365, 3590, 3949, 4300, 4730, 7180, 7898, 8975, 9460, 11825, 15437, 15796, 17950, 19745, 23650, 30874, 35900, 39490, 47300, 61748, 77185, 78980, 98725, 154370, 169807, 197450, 308740, 339614, 385925, 394900, 679228, 771850, 849035, 1543700, 1698070, 3396140, 4245175, 8490350, 16980700]

約数ペア:

[(1, 16980700), (2, 8490350), (4, 4245175), (5, 3396140), (10, 1698070), (11, 1543700), (20, 849035), (22, 771850), (25, 679228), (43, 394900), (44, 385925), (50, 339614), (55, 308740), (86, 197450), (100, 169807), (110, 154370), (172, 98725), (215, 78980), (220, 77185), (275, 61748), (359, 47300), (430, 39490), (473, 35900), (550, 30874), (718, 23650), (860, 19745), (946, 17950), (1075, 15796), (1100, 15437), (1436, 11825), (1795, 9460), (1892, 8975), (2150, 7898), (2365, 7180), (3590, 4730), (3949, 4300)]