91688690

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{1451}}^1$

素因数の和:1618

約数の個数: 32

約数和(自身を含む): 169361280

約数和(自身を除く): 77672590

約数列:

[1, 2, 5, 10, 71, 89, 142, 178, 355, 445, 710, 890, 1451, 2902, 6319, 7255, 12638, 14510, 31595, 63190, 103021, 129139, 206042, 258278, 515105, 645695, 1030210, 1291390, 9168869, 18337738, 45844345, 91688690]

約数ペア:

[(1, 91688690), (2, 45844345), (5, 18337738), (10, 9168869), (71, 1291390), (89, 1030210), (142, 645695), (178, 515105), (355, 258278), (445, 206042), (710, 129139), (890, 103021), (1451, 63190), (2902, 31595), (6319, 14510), (7255, 12638)]