8911990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 16848000

約数和(自身を除く): 7936010

約数列:

[1, 2, 5, 10, 29, 58, 79, 145, 158, 290, 389, 395, 778, 790, 1945, 2291, 3890, 4582, 11281, 11455, 22562, 22910, 30731, 56405, 61462, 112810, 153655, 307310, 891199, 1782398, 4455995, 8911990]

約数ペア:

[(1, 8911990), (2, 4455995), (5, 1782398), (10, 891199), (29, 307310), (58, 153655), (79, 112810), (145, 61462), (158, 56405), (290, 30731), (389, 22910), (395, 22562), (778, 11455), (790, 11281), (1945, 4582), (2291, 3890)]