19907425

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1511}}^1$

素因数の和:1569

約数の個数: 24

約数和(自身を含む): 26998272

約数和(自身を除く): 7090847

約数列:

[1, 5, 17, 25, 31, 85, 155, 425, 527, 775, 1511, 2635, 7555, 13175, 25687, 37775, 46841, 128435, 234205, 642175, 796297, 1171025, 3981485, 19907425]

約数ペア:

[(1, 19907425), (5, 3981485), (17, 1171025), (25, 796297), (31, 642175), (85, 234205), (155, 128435), (425, 46841), (527, 37775), (775, 25687), (1511, 13175), (2635, 7555)]