18972008

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{2729}}^1$

素因数の和:2825

約数の個数: 32

約数和(自身を含む): 39312000

約数和(自身を除く): 20339992

約数列:

[1, 2, 4, 8, 11, 22, 44, 79, 88, 158, 316, 632, 869, 1738, 2729, 3476, 5458, 6952, 10916, 21832, 30019, 60038, 120076, 215591, 240152, 431182, 862364, 1724728, 2371501, 4743002, 9486004, 18972008]

約数ペア:

[(1, 18972008), (2, 9486004), (4, 4743002), (8, 2371501), (11, 1724728), (22, 862364), (44, 431182), (79, 240152), (88, 215591), (158, 120076), (316, 60038), (632, 30019), (869, 21832), (1738, 10916), (2729, 6952), (3476, 5458)]