20181750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 51217920

約数和(自身を除く): 31036170

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 71, 75, 125, 142, 150, 213, 250, 355, 375, 379, 426, 710, 750, 758, 1065, 1137, 1775, 1895, 2130, 2274, 3550, 3790, 5325, 5685, 8875, 9475, 10650, 11370, 17750, 18950, 26625, 26909, 28425, 47375, 53250, 53818, 56850, 80727, 94750, 134545, 142125, 161454, 269090, 284250, 403635, 672725, 807270, 1345450, 2018175, 3363625, 4036350, 6727250, 10090875, 20181750]

約数ペア:

[(1, 20181750), (2, 10090875), (3, 6727250), (5, 4036350), (6, 3363625), (10, 2018175), (15, 1345450), (25, 807270), (30, 672725), (50, 403635), (71, 284250), (75, 269090), (125, 161454), (142, 142125), (150, 134545), (213, 94750), (250, 80727), (355, 56850), (375, 53818), (379, 53250), (426, 47375), (710, 28425), (750, 26909), (758, 26625), (1065, 18950), (1137, 17750), (1775, 11370), (1895, 10650), (2130, 9475), (2274, 8875), (3550, 5685), (3790, 5325)]