20863310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{167}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 42039648

約数和(自身を除く): 21176338

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 167, 310, 334, 403, 806, 835, 961, 1670, 1922, 2015, 2171, 4030, 4342, 4805, 5177, 9610, 10354, 10855, 12493, 21710, 24986, 25885, 51770, 62465, 67301, 124930, 134602, 160487, 320974, 336505, 673010, 802435, 1604870, 2086331, 4172662, 10431655, 20863310]

約数ペア:

[(1, 20863310), (2, 10431655), (5, 4172662), (10, 2086331), (13, 1604870), (26, 802435), (31, 673010), (62, 336505), (65, 320974), (130, 160487), (155, 134602), (167, 124930), (310, 67301), (334, 62465), (403, 51770), (806, 25885), (835, 24986), (961, 21710), (1670, 12493), (1922, 10855), (2015, 10354), (2171, 9610), (4030, 5177), (4342, 4805)]