19515275

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 27230400

約数和(自身を除く): 7715125

約数列:

[1, 5, 13, 25, 31, 65, 149, 155, 169, 325, 403, 745, 775, 845, 1937, 2015, 3725, 4225, 4619, 5239, 9685, 10075, 23095, 25181, 26195, 48425, 60047, 115475, 125905, 130975, 300235, 629525, 780611, 1501175, 3903055, 19515275]

約数ペア:

[(1, 19515275), (5, 3903055), (13, 1501175), (25, 780611), (31, 629525), (65, 300235), (149, 130975), (155, 125905), (169, 115475), (325, 60047), (403, 48425), (745, 26195), (775, 25181), (845, 23095), (1937, 10075), (2015, 9685), (3725, 5239), (4225, 4619)]