31889375

素因数分解:

$5^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:261

約数の個数: 40

約数和(自身を含む): 47009952

約数和(自身を除く): 15120577

約数列:

[1, 5, 7, 25, 35, 37, 125, 175, 185, 197, 259, 625, 875, 925, 985, 1295, 1379, 4375, 4625, 4925, 6475, 6895, 7289, 23125, 24625, 32375, 34475, 36445, 51023, 123125, 161875, 172375, 182225, 255115, 861875, 911125, 1275575, 4555625, 6377875, 31889375]

約数ペア:

[(1, 31889375), (5, 6377875), (7, 4555625), (25, 1275575), (35, 911125), (37, 861875), (125, 255115), (175, 182225), (185, 172375), (197, 161875), (259, 123125), (625, 51023), (875, 36445), (925, 34475), (985, 32375), (1295, 24625), (1379, 23125), (4375, 7289), (4625, 6895), (4925, 6475)]