20732920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{3067}}^1$

素因数の和:3104

約数の個数: 48

約数和(自身を含む): 50529960

約数和(自身を除く): 29797040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3067, 3380, 6134, 6760, 12268, 15335, 24536, 30670, 39871, 61340, 79742, 122680, 159484, 199355, 318968, 398710, 518323, 797420, 1036646, 1594840, 2073292, 2591615, 4146584, 5183230, 10366460, 20732920]

約数ペア:

[(1, 20732920), (2, 10366460), (4, 5183230), (5, 4146584), (8, 2591615), (10, 2073292), (13, 1594840), (20, 1036646), (26, 797420), (40, 518323), (52, 398710), (65, 318968), (104, 199355), (130, 159484), (169, 122680), (260, 79742), (338, 61340), (520, 39871), (676, 30670), (845, 24536), (1352, 15335), (1690, 12268), (3067, 6760), (3380, 6134)]