21297325

素因数分解:

$5^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{929}}^1$

素因数の和:1077

約数の個数: 24

約数和(自身を含む): 30444480

約数和(自身を除く): 9147155

約数列:

[1, 5, 7, 25, 35, 131, 175, 655, 917, 929, 3275, 4585, 4645, 6503, 22925, 23225, 32515, 121699, 162575, 608495, 851893, 3042475, 4259465, 21297325]

約数ペア:

[(1, 21297325), (5, 4259465), (7, 3042475), (25, 851893), (35, 608495), (131, 162575), (175, 121699), (655, 32515), (917, 23225), (929, 22925), (3275, 6503), (4585, 4645)]