19944275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{563}}^1$

素因数の和:695

約数の個数: 24

約数和(自身を含む): 26925360

約数和(自身を除く): 6981085

約数列:

[1, 5, 13, 25, 65, 109, 325, 545, 563, 1417, 2725, 2815, 7085, 7319, 14075, 35425, 36595, 61367, 182975, 306835, 797771, 1534175, 3988855, 19944275]

約数ペア:

[(1, 19944275), (5, 3988855), (13, 1534175), (25, 797771), (65, 306835), (109, 182975), (325, 61367), (545, 36595), (563, 35425), (1417, 14075), (2725, 7319), (2815, 7085)]