81521825

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{42349}}^1$

素因数の和:42377

約数の個数: 24

約数和(自身を含む): 126033600

約数和(自身を除く): 44511775

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 42349, 211745, 296443, 465839, 1058725, 1482215, 2329195, 3260873, 7411075, 11645975, 16304365, 81521825]

約数ペア:

[(1, 81521825), (5, 16304365), (7, 11645975), (11, 7411075), (25, 3260873), (35, 2329195), (55, 1482215), (77, 1058725), (175, 465839), (275, 296443), (385, 211745), (1925, 42349)]