2171500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 4900896

約数和(自身を除く): 2729396

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 101, 125, 172, 202, 215, 250, 404, 430, 500, 505, 860, 1010, 1075, 2020, 2150, 2525, 4300, 4343, 5050, 5375, 8686, 10100, 10750, 12625, 17372, 21500, 21715, 25250, 43430, 50500, 86860, 108575, 217150, 434300, 542875, 1085750, 2171500]

約数ペア:

[(1, 2171500), (2, 1085750), (4, 542875), (5, 434300), (10, 217150), (20, 108575), (25, 86860), (43, 50500), (50, 43430), (86, 25250), (100, 21715), (101, 21500), (125, 17372), (172, 12625), (202, 10750), (215, 10100), (250, 8686), (404, 5375), (430, 5050), (500, 4343), (505, 4300), (860, 2525), (1010, 2150), (1075, 2020)]