18815840290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4668943}}^1$

素因数の和:4668994

約数の個数: 32

約数和(自身を含む): 37650364416

約数和(自身を除く): 18834524126

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 4668943, 9337886, 23344715, 46689430, 60696259, 121392518, 144737233, 289474466, 303481295, 606962590, 723686165, 1447372330, 1881584029, 3763168058, 9407920145, 18815840290]

約数ペア:

[(1, 18815840290), (2, 9407920145), (5, 3763168058), (10, 1881584029), (13, 1447372330), (26, 723686165), (31, 606962590), (62, 303481295), (65, 289474466), (130, 144737233), (155, 121392518), (310, 60696259), (403, 46689430), (806, 23344715), (2015, 9337886), (4030, 4668943)]