21245250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{2179}}^1$

素因数の和:2212

約数の個数: 64

約数和(自身を含む): 57133440

約数和(自身を除く): 35888190

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 125, 130, 150, 195, 250, 325, 375, 390, 650, 750, 975, 1625, 1950, 2179, 3250, 4358, 4875, 6537, 9750, 10895, 13074, 21790, 28327, 32685, 54475, 56654, 65370, 84981, 108950, 141635, 163425, 169962, 272375, 283270, 326850, 424905, 544750, 708175, 817125, 849810, 1416350, 1634250, 2124525, 3540875, 4249050, 7081750, 10622625, 21245250]

約数ペア:

[(1, 21245250), (2, 10622625), (3, 7081750), (5, 4249050), (6, 3540875), (10, 2124525), (13, 1634250), (15, 1416350), (25, 849810), (26, 817125), (30, 708175), (39, 544750), (50, 424905), (65, 326850), (75, 283270), (78, 272375), (125, 169962), (130, 163425), (150, 141635), (195, 108950), (250, 84981), (325, 65370), (375, 56654), (390, 54475), (650, 32685), (750, 28327), (975, 21790), (1625, 13074), (1950, 10895), (2179, 9750), (3250, 6537), (4358, 4875)]