20912375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1$

素因数の和:320

約数の個数: 32

約数和(自身を含む): 29023488

約数和(自身を除く): 8111113

約数列:

[1, 5, 11, 25, 55, 67, 125, 227, 275, 335, 737, 1135, 1375, 1675, 2497, 3685, 5675, 8375, 12485, 15209, 18425, 28375, 62425, 76045, 92125, 167299, 312125, 380225, 836495, 1901125, 4182475, 20912375]

約数ペア:

[(1, 20912375), (5, 4182475), (11, 1901125), (25, 836495), (55, 380225), (67, 312125), (125, 167299), (227, 92125), (275, 76045), (335, 62425), (737, 28375), (1135, 18425), (1375, 15209), (1675, 12485), (2497, 8375), (3685, 5675)]