81313310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{20177}}^1$

素因数の和:20228

約数の個数: 32

約数和(自身を含む): 162715392

約数和(自身を除く): 81402082

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 20177, 40354, 100885, 201770, 262301, 524602, 625487, 1250974, 1311505, 2623010, 3127435, 6254870, 8131331, 16262662, 40656655, 81313310]

約数ペア:

[(1, 81313310), (2, 40656655), (5, 16262662), (10, 8131331), (13, 6254870), (26, 3127435), (31, 2623010), (62, 1311505), (65, 1250974), (130, 625487), (155, 524602), (310, 262301), (403, 201770), (806, 100885), (2015, 40354), (4030, 20177)]