81137540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11897}}^1$

素因数の和:11948

約数の個数: 48

約数和(自身を含む): 191890944

約数和(自身を除く): 110753404

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 11897, 23794, 47588, 59485, 118970, 130867, 237940, 261734, 368807, 523468, 654335, 737614, 1308670, 1475228, 1844035, 2617340, 3688070, 4056877, 7376140, 8113754, 16227508, 20284385, 40568770, 81137540]

約数ペア:

[(1, 81137540), (2, 40568770), (4, 20284385), (5, 16227508), (10, 8113754), (11, 7376140), (20, 4056877), (22, 3688070), (31, 2617340), (44, 1844035), (55, 1475228), (62, 1308670), (110, 737614), (124, 654335), (155, 523468), (220, 368807), (310, 261734), (341, 237940), (620, 130867), (682, 118970), (1364, 59485), (1705, 47588), (3410, 23794), (6820, 11897)]