20159615

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 29306880

約数和(自身を除く): 9147265

約数列:

[1, 5, 7, 23, 35, 79, 115, 161, 317, 395, 553, 805, 1585, 1817, 2219, 2765, 7291, 9085, 11095, 12719, 25043, 36455, 51037, 63595, 125215, 175301, 255185, 575989, 876505, 2879945, 4031923, 20159615]

約数ペア:

[(1, 20159615), (5, 4031923), (7, 2879945), (23, 876505), (35, 575989), (79, 255185), (115, 175301), (161, 125215), (317, 63595), (395, 51037), (553, 36455), (805, 25043), (1585, 12719), (1817, 11095), (2219, 9085), (2765, 7291)]