21456525

素因数分解:

$3^1\times 5^2\times {\mathrm{73}}^1\times {\mathrm{3919}}^1$

素因数の和:4005

約数の個数: 24

約数和(自身を含む): 35969920

約数和(自身を除く): 14513395

約数列:

[1, 3, 5, 15, 25, 73, 75, 219, 365, 1095, 1825, 3919, 5475, 11757, 19595, 58785, 97975, 286087, 293925, 858261, 1430435, 4291305, 7152175, 21456525]

約数ペア:

[(1, 21456525), (3, 7152175), (5, 4291305), (15, 1430435), (25, 858261), (73, 293925), (75, 286087), (219, 97975), (365, 58785), (1095, 19595), (1825, 11757), (3919, 5475)]