21497025

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 39426048

約数和(自身を除く): 17929023

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 71, 75, 165, 213, 275, 355, 367, 781, 825, 1065, 1101, 1775, 1835, 2343, 3905, 4037, 5325, 5505, 9175, 11715, 12111, 19525, 20185, 26057, 27525, 58575, 60555, 78171, 100925, 130285, 286627, 302775, 390855, 651425, 859881, 1433135, 1954275, 4299405, 7165675, 21497025]

約数ペア:

[(1, 21497025), (3, 7165675), (5, 4299405), (11, 1954275), (15, 1433135), (25, 859881), (33, 651425), (55, 390855), (71, 302775), (75, 286627), (165, 130285), (213, 100925), (275, 78171), (355, 60555), (367, 58575), (781, 27525), (825, 26057), (1065, 20185), (1101, 19525), (1775, 12111), (1835, 11715), (2343, 9175), (3905, 5505), (4037, 5325)]