81211760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145021}}^1$

素因数の和:145041

約数の個数: 40

約数和(自身を含む): 215792736

約数和(自身を除く): 134580976

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145021, 290042, 580084, 725105, 1015147, 1160168, 1450210, 2030294, 2320336, 2900420, 4060588, 5075735, 5800840, 8121176, 10151470, 11601680, 16242352, 20302940, 40605880, 81211760]

約数ペア:

[(1, 81211760), (2, 40605880), (4, 20302940), (5, 16242352), (7, 11601680), (8, 10151470), (10, 8121176), (14, 5800840), (16, 5075735), (20, 4060588), (28, 2900420), (35, 2320336), (40, 2030294), (56, 1450210), (70, 1160168), (80, 1015147), (112, 725105), (140, 580084), (280, 290042), (560, 145021)]