18650990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 34499520

約数和(自身を除く): 15848530

約数列:

[1, 2, 5, 10, 71, 109, 142, 218, 241, 355, 482, 545, 710, 1090, 1205, 2410, 7739, 15478, 17111, 26269, 34222, 38695, 52538, 77390, 85555, 131345, 171110, 262690, 1865099, 3730198, 9325495, 18650990]

約数ペア:

[(1, 18650990), (2, 9325495), (5, 3730198), (10, 1865099), (71, 262690), (109, 171110), (142, 131345), (218, 85555), (241, 77390), (355, 52538), (482, 38695), (545, 34222), (710, 26269), (1090, 17111), (1205, 15478), (2410, 7739)]