20755575

素因数分解:

$3^3\times 5^2\times {\mathrm{97}}^1\times {\mathrm{317}}^1$

素因数の和:433

約数の個数: 48

約数和(自身を含む): 38643360

約数和(自身を除く): 17887785

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 97, 135, 225, 291, 317, 485, 675, 873, 951, 1455, 1585, 2425, 2619, 2853, 4365, 4755, 7275, 7925, 8559, 13095, 14265, 21825, 23775, 30749, 42795, 65475, 71325, 92247, 153745, 213975, 276741, 461235, 768725, 830223, 1383705, 2306175, 4151115, 6918525, 20755575]

約数ペア:

[(1, 20755575), (3, 6918525), (5, 4151115), (9, 2306175), (15, 1383705), (25, 830223), (27, 768725), (45, 461235), (75, 276741), (97, 213975), (135, 153745), (225, 92247), (291, 71325), (317, 65475), (485, 42795), (675, 30749), (873, 23775), (951, 21825), (1455, 14265), (1585, 13095), (2425, 8559), (2619, 7925), (2853, 7275), (4365, 4755)]