20109866

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:243

約数の個数: 48

約数和(自身を含む): 38185344

約数和(自身を除く): 18075478

約数列:

[1, 2, 7, 14, 19, 23, 38, 46, 133, 161, 173, 266, 322, 346, 361, 437, 722, 874, 1211, 2422, 2527, 3059, 3287, 3979, 5054, 6118, 6574, 7958, 8303, 16606, 23009, 27853, 46018, 55706, 58121, 62453, 75601, 116242, 124906, 151202, 437171, 529207, 874342, 1058414, 1436419, 2872838, 10054933, 20109866]

約数ペア:

[(1, 20109866), (2, 10054933), (7, 2872838), (14, 1436419), (19, 1058414), (23, 874342), (38, 529207), (46, 437171), (133, 151202), (161, 124906), (173, 116242), (266, 75601), (322, 62453), (346, 58121), (361, 55706), (437, 46018), (722, 27853), (874, 23009), (1211, 16606), (2422, 8303), (2527, 7958), (3059, 6574), (3287, 6118), (3979, 5054)]