19561940

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{3719}}^1$

素因数の和:3991

約数の個数: 24

約数和(自身を含む): 41247360

約数和(自身を除く): 21685420

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 3719, 5260, 7438, 14876, 18595, 37190, 74380, 978097, 1956194, 3912388, 4890485, 9780970, 19561940]

約数ペア:

[(1, 19561940), (2, 9780970), (4, 4890485), (5, 3912388), (10, 1956194), (20, 978097), (263, 74380), (526, 37190), (1052, 18595), (1315, 14876), (2630, 7438), (3719, 5260)]