19905160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2381}}^1$

素因数の和:2422

約数の個数: 64

約数和(自身を含む): 51451200

約数和(自身を除く): 31546040

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2381, 4180, 4762, 8360, 9524, 11905, 19048, 23810, 26191, 45239, 47620, 52382, 90478, 95240, 104764, 130955, 180956, 209528, 226195, 261910, 361912, 452390, 497629, 523820, 904780, 995258, 1047640, 1809560, 1990516, 2488145, 3981032, 4976290, 9952580, 19905160]

約数ペア:

[(1, 19905160), (2, 9952580), (4, 4976290), (5, 3981032), (8, 2488145), (10, 1990516), (11, 1809560), (19, 1047640), (20, 995258), (22, 904780), (38, 523820), (40, 497629), (44, 452390), (55, 361912), (76, 261910), (88, 226195), (95, 209528), (110, 180956), (152, 130955), (190, 104764), (209, 95240), (220, 90478), (380, 52382), (418, 47620), (440, 45239), (760, 26191), (836, 23810), (1045, 19048), (1672, 11905), (2090, 9524), (2381, 8360), (4180, 4762)]