81570040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{3701}}^1$

素因数の和:3760

約数の個数: 64

約数和(自身を含む): 199908000

約数和(自身を除く): 118337960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 58, 76, 95, 116, 145, 152, 190, 232, 290, 380, 551, 580, 760, 1102, 1160, 2204, 2755, 3701, 4408, 5510, 7402, 11020, 14804, 18505, 22040, 29608, 37010, 70319, 74020, 107329, 140638, 148040, 214658, 281276, 351595, 429316, 536645, 562552, 703190, 858632, 1073290, 1406380, 2039251, 2146580, 2812760, 4078502, 4293160, 8157004, 10196255, 16314008, 20392510, 40785020, 81570040]

約数ペア:

[(1, 81570040), (2, 40785020), (4, 20392510), (5, 16314008), (8, 10196255), (10, 8157004), (19, 4293160), (20, 4078502), (29, 2812760), (38, 2146580), (40, 2039251), (58, 1406380), (76, 1073290), (95, 858632), (116, 703190), (145, 562552), (152, 536645), (190, 429316), (232, 351595), (290, 281276), (380, 214658), (551, 148040), (580, 140638), (760, 107329), (1102, 74020), (1160, 70319), (2204, 37010), (2755, 29608), (3701, 22040), (4408, 18505), (5510, 14804), (7402, 11020)]