18923950

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:493

約数の個数: 48

約数和(自身を含む): 37676160

約数和(自身を除く): 18752210

約数列:

[1, 2, 5, 10, 25, 29, 31, 50, 58, 62, 145, 155, 290, 310, 421, 725, 775, 842, 899, 1450, 1550, 1798, 2105, 4210, 4495, 8990, 10525, 12209, 13051, 21050, 22475, 24418, 26102, 44950, 61045, 65255, 122090, 130510, 305225, 326275, 378479, 610450, 652550, 756958, 1892395, 3784790, 9461975, 18923950]

約数ペア:

[(1, 18923950), (2, 9461975), (5, 3784790), (10, 1892395), (25, 756958), (29, 652550), (31, 610450), (50, 378479), (58, 326275), (62, 305225), (145, 130510), (155, 122090), (290, 65255), (310, 61045), (421, 44950), (725, 26102), (775, 24418), (842, 22475), (899, 21050), (1450, 13051), (1550, 12209), (1798, 10525), (2105, 8990), (4210, 4495)]