21818200

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^2\times {\mathrm{59}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 52814700

約数和(自身を除く): 30996500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 59, 86, 100, 118, 172, 200, 215, 236, 295, 344, 430, 472, 590, 860, 1075, 1180, 1475, 1720, 1849, 2150, 2360, 2537, 2950, 3698, 4300, 5074, 5900, 7396, 8600, 9245, 10148, 11800, 12685, 14792, 18490, 20296, 25370, 36980, 46225, 50740, 63425, 73960, 92450, 101480, 109091, 126850, 184900, 218182, 253700, 369800, 436364, 507400, 545455, 872728, 1090910, 2181820, 2727275, 4363640, 5454550, 10909100, 21818200]

約数ペア:

[(1, 21818200), (2, 10909100), (4, 5454550), (5, 4363640), (8, 2727275), (10, 2181820), (20, 1090910), (25, 872728), (40, 545455), (43, 507400), (50, 436364), (59, 369800), (86, 253700), (100, 218182), (118, 184900), (172, 126850), (200, 109091), (215, 101480), (236, 92450), (295, 73960), (344, 63425), (430, 50740), (472, 46225), (590, 36980), (860, 25370), (1075, 20296), (1180, 18490), (1475, 14792), (1720, 12685), (1849, 11800), (2150, 10148), (2360, 9245), (2537, 8600), (2950, 7396), (3698, 5900), (4300, 5074)]