20643428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{4783}}^1$

素因数の和:4883

約数の個数: 24

約数和(自身を含む): 39381888

約数和(自身を除く): 18738460

約数列:

[1, 2, 4, 13, 26, 52, 83, 166, 332, 1079, 2158, 4316, 4783, 9566, 19132, 62179, 124358, 248716, 396989, 793978, 1587956, 5160857, 10321714, 20643428]

約数ペア:

[(1, 20643428), (2, 10321714), (4, 5160857), (13, 1587956), (26, 793978), (52, 396989), (83, 248716), (166, 124358), (332, 62179), (1079, 19132), (2158, 9566), (4316, 4783)]