21576250

素因数分解:

$2^1\times 5^4\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:484

約数の個数: 40

約数和(自身を含む): 41527332

約数和(自身を除く): 19951082

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 125, 205, 250, 410, 421, 625, 842, 1025, 1250, 2050, 2105, 4210, 5125, 10250, 10525, 17261, 21050, 25625, 34522, 51250, 52625, 86305, 105250, 172610, 263125, 431525, 526250, 863050, 2157625, 4315250, 10788125, 21576250]

約数ペア:

[(1, 21576250), (2, 10788125), (5, 4315250), (10, 2157625), (25, 863050), (41, 526250), (50, 431525), (82, 263125), (125, 172610), (205, 105250), (250, 86305), (410, 52625), (421, 51250), (625, 34522), (842, 25625), (1025, 21050), (1250, 17261), (2050, 10525), (2105, 10250), (4210, 5125)]