81855190

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{3719}}^1$

素因数の和:3828

約数の個数: 32

約数和(自身を含む): 154275840

約数和(自身を除く): 72420650

約数列:

[1, 2, 5, 10, 31, 62, 71, 142, 155, 310, 355, 710, 2201, 3719, 4402, 7438, 11005, 18595, 22010, 37190, 115289, 230578, 264049, 528098, 576445, 1152890, 1320245, 2640490, 8185519, 16371038, 40927595, 81855190]

約数ペア:

[(1, 81855190), (2, 40927595), (5, 16371038), (10, 8185519), (31, 2640490), (62, 1320245), (71, 1152890), (142, 576445), (155, 528098), (310, 264049), (355, 230578), (710, 115289), (2201, 37190), (3719, 22010), (4402, 18595), (7438, 11005)]