15991180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{349}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 35280000

約数和(自身を除く): 19288820

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 79, 116, 145, 158, 290, 316, 349, 395, 580, 698, 790, 1396, 1580, 1745, 2291, 3490, 4582, 6980, 9164, 10121, 11455, 20242, 22910, 27571, 40484, 45820, 50605, 55142, 101210, 110284, 137855, 202420, 275710, 551420, 799559, 1599118, 3198236, 3997795, 7995590, 15991180]

約数ペア:

[(1, 15991180), (2, 7995590), (4, 3997795), (5, 3198236), (10, 1599118), (20, 799559), (29, 551420), (58, 275710), (79, 202420), (116, 137855), (145, 110284), (158, 101210), (290, 55142), (316, 50605), (349, 45820), (395, 40484), (580, 27571), (698, 22910), (790, 20242), (1396, 11455), (1580, 10121), (1745, 9164), (2291, 6980), (3490, 4582)]