19381225

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:321

約数の個数: 24

約数和(自身を含む): 24909120

約数和(自身を除く): 5527895

約数列:

[1, 5, 25, 61, 71, 179, 305, 355, 895, 1525, 1775, 4331, 4475, 10919, 12709, 21655, 54595, 63545, 108275, 272975, 317725, 775249, 3876245, 19381225]

約数ペア:

[(1, 19381225), (5, 3876245), (25, 775249), (61, 317725), (71, 272975), (179, 108275), (305, 63545), (355, 54595), (895, 21655), (1525, 12709), (1775, 10919), (4331, 4475)]