217417880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{647}}^1$

素因数の和:960

約数の個数: 64

約数和(自身を含む): 507617280

約数和(自身を除く): 290199400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 271, 310, 542, 620, 647, 1084, 1240, 1294, 1355, 2168, 2588, 2710, 3235, 5176, 5420, 6470, 8401, 10840, 12940, 16802, 20057, 25880, 33604, 40114, 42005, 67208, 80228, 84010, 100285, 160456, 168020, 175337, 200570, 336040, 350674, 401140, 701348, 802280, 876685, 1402696, 1753370, 3506740, 5435447, 7013480, 10870894, 21741788, 27177235, 43483576, 54354470, 108708940, 217417880]

約数ペア:

[(1, 217417880), (2, 108708940), (4, 54354470), (5, 43483576), (8, 27177235), (10, 21741788), (20, 10870894), (31, 7013480), (40, 5435447), (62, 3506740), (124, 1753370), (155, 1402696), (248, 876685), (271, 802280), (310, 701348), (542, 401140), (620, 350674), (647, 336040), (1084, 200570), (1240, 175337), (1294, 168020), (1355, 160456), (2168, 100285), (2588, 84010), (2710, 80228), (3235, 67208), (5176, 42005), (5420, 40114), (6470, 33604), (8401, 25880), (10840, 20057), (12940, 16802)]