20189475

素因数分解:

$3^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{1471}}^1$

素因数の和:1548

約数の個数: 36

約数和(自身を含む): 36779392

約数和(自身を除く): 16589917

約数列:

[1, 3, 5, 9, 15, 25, 45, 61, 75, 183, 225, 305, 549, 915, 1471, 1525, 2745, 4413, 4575, 7355, 13239, 13725, 22065, 36775, 66195, 89731, 110325, 269193, 330975, 448655, 807579, 1345965, 2243275, 4037895, 6729825, 20189475]

約数ペア:

[(1, 20189475), (3, 6729825), (5, 4037895), (9, 2243275), (15, 1345965), (25, 807579), (45, 448655), (61, 330975), (75, 269193), (183, 110325), (225, 89731), (305, 66195), (549, 36775), (915, 22065), (1471, 13725), (1525, 13239), (2745, 7355), (4413, 4575)]