21949455

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{971}}^1$

素因数の和:1127

約数の個数: 32

約数和(自身を含む): 38631168

約数和(自身を除く): 16681713

約数列:

[1, 3, 5, 11, 15, 33, 55, 137, 165, 411, 685, 971, 1507, 2055, 2913, 4521, 4855, 7535, 10681, 14565, 22605, 32043, 53405, 133027, 160215, 399081, 665135, 1463297, 1995405, 4389891, 7316485, 21949455]

約数ペア:

[(1, 21949455), (3, 7316485), (5, 4389891), (11, 1995405), (15, 1463297), (33, 665135), (55, 399081), (137, 160215), (165, 133027), (411, 53405), (685, 32043), (971, 22605), (1507, 14565), (2055, 10681), (2913, 7535), (4521, 4855)]