21524540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{233}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 25649860

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 149, 155, 233, 298, 310, 466, 596, 620, 745, 932, 1165, 1490, 2330, 2980, 4619, 4660, 7223, 9238, 14446, 18476, 23095, 28892, 34717, 36115, 46190, 69434, 72230, 92380, 138868, 144460, 173585, 347170, 694340, 1076227, 2152454, 4304908, 5381135, 10762270, 21524540]

約数ペア:

[(1, 21524540), (2, 10762270), (4, 5381135), (5, 4304908), (10, 2152454), (20, 1076227), (31, 694340), (62, 347170), (124, 173585), (149, 144460), (155, 138868), (233, 92380), (298, 72230), (310, 69434), (466, 46190), (596, 36115), (620, 34717), (745, 28892), (932, 23095), (1165, 18476), (1490, 14446), (2330, 9238), (2980, 7223), (4619, 4660)]