66475880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{263}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 153964800

約数和(自身を除く): 87488920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 89, 142, 178, 263, 284, 355, 356, 445, 526, 568, 710, 712, 890, 1052, 1315, 1420, 1780, 2104, 2630, 2840, 3560, 5260, 6319, 10520, 12638, 18673, 23407, 25276, 31595, 37346, 46814, 50552, 63190, 74692, 93365, 93628, 117035, 126380, 149384, 186730, 187256, 234070, 252760, 373460, 468140, 746920, 936280, 1661897, 3323794, 6647588, 8309485, 13295176, 16618970, 33237940, 66475880]

約数ペア:

[(1, 66475880), (2, 33237940), (4, 16618970), (5, 13295176), (8, 8309485), (10, 6647588), (20, 3323794), (40, 1661897), (71, 936280), (89, 746920), (142, 468140), (178, 373460), (263, 252760), (284, 234070), (355, 187256), (356, 186730), (445, 149384), (526, 126380), (568, 117035), (710, 93628), (712, 93365), (890, 74692), (1052, 63190), (1315, 50552), (1420, 46814), (1780, 37346), (2104, 31595), (2630, 25276), (2840, 23407), (3560, 18673), (5260, 12638), (6319, 10520)]