21554750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 46949760

約数和(自身を除く): 25395010

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 109, 113, 125, 175, 218, 226, 250, 350, 545, 565, 763, 791, 875, 1090, 1130, 1526, 1582, 1750, 2725, 2825, 3815, 3955, 5450, 5650, 7630, 7910, 12317, 13625, 14125, 19075, 19775, 24634, 27250, 28250, 38150, 39550, 61585, 86219, 95375, 98875, 123170, 172438, 190750, 197750, 307925, 431095, 615850, 862190, 1539625, 2155475, 3079250, 4310950, 10777375, 21554750]

約数ペア:

[(1, 21554750), (2, 10777375), (5, 4310950), (7, 3079250), (10, 2155475), (14, 1539625), (25, 862190), (35, 615850), (50, 431095), (70, 307925), (109, 197750), (113, 190750), (125, 172438), (175, 123170), (218, 98875), (226, 95375), (250, 86219), (350, 61585), (545, 39550), (565, 38150), (763, 28250), (791, 27250), (875, 24634), (1090, 19775), (1130, 19075), (1526, 14125), (1582, 13625), (1750, 12317), (2725, 7910), (2825, 7630), (3815, 5650), (3955, 5450)]