21877460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{359}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 50440320

約数和(自身を除く): 28562860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 277, 359, 554, 718, 1108, 1385, 1436, 1795, 2770, 3047, 3590, 3949, 5540, 6094, 7180, 7898, 12188, 15235, 15796, 19745, 30470, 39490, 60940, 78980, 99443, 198886, 397772, 497215, 994430, 1093873, 1988860, 2187746, 4375492, 5469365, 10938730, 21877460]

約数ペア:

[(1, 21877460), (2, 10938730), (4, 5469365), (5, 4375492), (10, 2187746), (11, 1988860), (20, 1093873), (22, 994430), (44, 497215), (55, 397772), (110, 198886), (220, 99443), (277, 78980), (359, 60940), (554, 39490), (718, 30470), (1108, 19745), (1385, 15796), (1436, 15235), (1795, 12188), (2770, 7898), (3047, 7180), (3590, 6094), (3949, 5540)]