19955475

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{2861}}^1$

素因数の和:2908

約数の個数: 36

約数和(自身を含む): 36908352

約数和(自身を除く): 16952877

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 1395, 2325, 2861, 6975, 8583, 14305, 25749, 42915, 71525, 88691, 128745, 214575, 266073, 443455, 643725, 798219, 1330365, 2217275, 3991095, 6651825, 19955475]

約数ペア:

[(1, 19955475), (3, 6651825), (5, 3991095), (9, 2217275), (15, 1330365), (25, 798219), (31, 643725), (45, 443455), (75, 266073), (93, 214575), (155, 128745), (225, 88691), (279, 71525), (465, 42915), (775, 25749), (1395, 14305), (2325, 8583), (2861, 6975)]