16638850

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:235

約数の個数: 48

約数和(自身を含む): 32408640

約数和(自身を除く): 15769790

約数列:

[1, 2, 5, 10, 25, 43, 50, 71, 86, 109, 142, 215, 218, 355, 430, 545, 710, 1075, 1090, 1775, 2150, 2725, 3053, 3550, 4687, 5450, 6106, 7739, 9374, 15265, 15478, 23435, 30530, 38695, 46870, 76325, 77390, 117175, 152650, 193475, 234350, 332777, 386950, 665554, 1663885, 3327770, 8319425, 16638850]

約数ペア:

[(1, 16638850), (2, 8319425), (5, 3327770), (10, 1663885), (25, 665554), (43, 386950), (50, 332777), (71, 234350), (86, 193475), (109, 152650), (142, 117175), (215, 77390), (218, 76325), (355, 46870), (430, 38695), (545, 30530), (710, 23435), (1075, 15478), (1090, 15265), (1775, 9374), (2150, 7739), (2725, 6106), (3053, 5450), (3550, 4687)]