21811425

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{17107}}^1$

素因数の和:17137

約数の個数: 24

約数和(自身を含む): 38185056

約数和(自身を除く): 16373631

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 17107, 51321, 85535, 256605, 290819, 427675, 872457, 1283025, 1454095, 4362285, 7270475, 21811425]

約数ペア:

[(1, 21811425), (3, 7270475), (5, 4362285), (15, 1454095), (17, 1283025), (25, 872457), (51, 427675), (75, 290819), (85, 256605), (255, 85535), (425, 51321), (1275, 17107)]