81572360

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{70321}}^1$

素因数の和:70361

約数の個数: 32

約数和(自身を含む): 189869400

約数和(自身を除く): 108297040

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 70321, 140642, 281284, 351605, 562568, 703210, 1406420, 2039309, 2812840, 4078618, 8157236, 10196545, 16314472, 20393090, 40786180, 81572360]

約数ペア:

[(1, 81572360), (2, 40786180), (4, 20393090), (5, 16314472), (8, 10196545), (10, 8157236), (20, 4078618), (29, 2812840), (40, 2039309), (58, 1406420), (116, 703210), (145, 562568), (232, 351605), (290, 281284), (580, 140642), (1160, 70321)]