20509980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4327}}^1$

素因数の和:4418

約数の個数: 48

約数和(自身を含む): 58168320

約数和(自身を除く): 37658340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 790, 948, 1185, 1580, 2370, 4327, 4740, 8654, 12981, 17308, 21635, 25962, 43270, 51924, 64905, 86540, 129810, 259620, 341833, 683666, 1025499, 1367332, 1709165, 2050998, 3418330, 4101996, 5127495, 6836660, 10254990, 20509980]

約数ペア:

[(1, 20509980), (2, 10254990), (3, 6836660), (4, 5127495), (5, 4101996), (6, 3418330), (10, 2050998), (12, 1709165), (15, 1367332), (20, 1025499), (30, 683666), (60, 341833), (79, 259620), (158, 129810), (237, 86540), (316, 64905), (395, 51924), (474, 43270), (790, 25962), (948, 21635), (1185, 17308), (1580, 12981), (2370, 8654), (4327, 4740)]