20369425

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:146

約数の個数: 36

約数和(自身を含む): 27826716

約数和(自身を除く): 7457291

約数列:

[1, 5, 19, 25, 37, 61, 95, 185, 305, 361, 475, 703, 925, 1159, 1525, 1805, 2257, 3515, 5795, 9025, 11285, 13357, 17575, 22021, 28975, 42883, 56425, 66785, 110105, 214415, 333925, 550525, 814777, 1072075, 4073885, 20369425]

約数ペア:

[(1, 20369425), (5, 4073885), (19, 1072075), (25, 814777), (37, 550525), (61, 333925), (95, 214415), (185, 110105), (305, 66785), (361, 56425), (475, 42883), (703, 28975), (925, 22021), (1159, 17575), (1525, 13357), (1805, 11285), (2257, 9025), (3515, 5795)]