20513768

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12269}}^1$

素因数の和:12305

約数の個数: 32

約数和(自身を含む): 44172000

約数和(自身を除く): 23658232

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 12269, 24538, 49076, 98152, 134959, 233111, 269918, 466222, 539836, 932444, 1079672, 1864888, 2564221, 5128442, 10256884, 20513768]

約数ペア:

[(1, 20513768), (2, 10256884), (4, 5128442), (8, 2564221), (11, 1864888), (19, 1079672), (22, 932444), (38, 539836), (44, 466222), (76, 269918), (88, 233111), (152, 134959), (209, 98152), (418, 49076), (836, 24538), (1672, 12269)]