20640488

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{2969}}^1$

素因数の和:3065

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 22127512

約数列:

[1, 2, 4, 8, 11, 22, 44, 79, 88, 158, 316, 632, 869, 1738, 2969, 3476, 5938, 6952, 11876, 23752, 32659, 65318, 130636, 234551, 261272, 469102, 938204, 1876408, 2580061, 5160122, 10320244, 20640488]

約数ペア:

[(1, 20640488), (2, 10320244), (4, 5160122), (8, 2580061), (11, 1876408), (22, 938204), (44, 469102), (79, 261272), (88, 234551), (158, 130636), (316, 65318), (632, 32659), (869, 23752), (1738, 11876), (2969, 6952), (3476, 5938)]