21453750

素因数分解:

$2^1\times 3^2\times 5^4\times {\mathrm{1907}}^1$

素因数の和:1935

約数の個数: 60

約数和(自身を含む): 58115772

約数和(自身を除く): 36662022

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 125, 150, 225, 250, 375, 450, 625, 750, 1125, 1250, 1875, 1907, 2250, 3750, 3814, 5625, 5721, 9535, 11250, 11442, 17163, 19070, 28605, 34326, 47675, 57210, 85815, 95350, 143025, 171630, 238375, 286050, 429075, 476750, 715125, 858150, 1191875, 1430250, 2145375, 2383750, 3575625, 4290750, 7151250, 10726875, 21453750]

約数ペア:

[(1, 21453750), (2, 10726875), (3, 7151250), (5, 4290750), (6, 3575625), (9, 2383750), (10, 2145375), (15, 1430250), (18, 1191875), (25, 858150), (30, 715125), (45, 476750), (50, 429075), (75, 286050), (90, 238375), (125, 171630), (150, 143025), (225, 95350), (250, 85815), (375, 57210), (450, 47675), (625, 34326), (750, 28605), (1125, 19070), (1250, 17163), (1875, 11442), (1907, 11250), (2250, 9535), (3750, 5721), (3814, 5625)]