20119700

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4679}}^1$

素因数の和:4736

約数の個数: 36

約数和(自身を含む): 44684640

約数和(自身を除く): 24564940

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4679, 9358, 18716, 23395, 46790, 93580, 116975, 201197, 233950, 402394, 467900, 804788, 1005985, 2011970, 4023940, 5029925, 10059850, 20119700]

約数ペア:

[(1, 20119700), (2, 10059850), (4, 5029925), (5, 4023940), (10, 2011970), (20, 1005985), (25, 804788), (43, 467900), (50, 402394), (86, 233950), (100, 201197), (172, 116975), (215, 93580), (430, 46790), (860, 23395), (1075, 18716), (2150, 9358), (4300, 4679)]