81022040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2069}}^1$

素因数の和:2180

約数の個数: 64

約数和(自身を含む): 201204000

約数和(自身を除く): 120181960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 440, 445, 712, 890, 979, 1780, 1958, 2069, 3560, 3916, 4138, 4895, 7832, 8276, 9790, 10345, 16552, 19580, 20690, 22759, 39160, 41380, 45518, 82760, 91036, 113795, 182072, 184141, 227590, 368282, 455180, 736564, 910360, 920705, 1473128, 1841410, 2025551, 3682820, 4051102, 7365640, 8102204, 10127755, 16204408, 20255510, 40511020, 81022040]

約数ペア:

[(1, 81022040), (2, 40511020), (4, 20255510), (5, 16204408), (8, 10127755), (10, 8102204), (11, 7365640), (20, 4051102), (22, 3682820), (40, 2025551), (44, 1841410), (55, 1473128), (88, 920705), (89, 910360), (110, 736564), (178, 455180), (220, 368282), (356, 227590), (440, 184141), (445, 182072), (712, 113795), (890, 91036), (979, 82760), (1780, 45518), (1958, 41380), (2069, 39160), (3560, 22759), (3916, 20690), (4138, 19580), (4895, 16552), (7832, 10345), (8276, 9790)]