20457860

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{9931}}^1$

素因数の和:10043

約数の個数: 24

約数和(自身を含む): 43382976

約数和(自身を除く): 22925116

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 9931, 19862, 39724, 49655, 99310, 198620, 1022893, 2045786, 4091572, 5114465, 10228930, 20457860]

約数ペア:

[(1, 20457860), (2, 10228930), (4, 5114465), (5, 4091572), (10, 2045786), (20, 1022893), (103, 198620), (206, 99310), (412, 49655), (515, 39724), (1030, 19862), (2060, 9931)]