18421520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17713}}^1$

素因数の和:17739

約数の個数: 40

約数和(自身を含む): 46127256

約数和(自身を除く): 27705736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 17713, 35426, 70852, 88565, 141704, 177130, 230269, 283408, 354260, 460538, 708520, 921076, 1151345, 1417040, 1842152, 2302690, 3684304, 4605380, 9210760, 18421520]

約数ペア:

[(1, 18421520), (2, 9210760), (4, 4605380), (5, 3684304), (8, 2302690), (10, 1842152), (13, 1417040), (16, 1151345), (20, 921076), (26, 708520), (40, 460538), (52, 354260), (65, 283408), (80, 230269), (104, 177130), (130, 141704), (208, 88565), (260, 70852), (520, 35426), (1040, 17713)]