28218520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1087}}^1$

素因数の和:1168

約数の個数: 64

約数和(自身を含む): 70502400

約数和(自身を除く): 42283880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 59, 88, 110, 118, 220, 236, 295, 440, 472, 590, 649, 1087, 1180, 1298, 2174, 2360, 2596, 3245, 4348, 5192, 5435, 6490, 8696, 10870, 11957, 12980, 21740, 23914, 25960, 43480, 47828, 59785, 64133, 95656, 119570, 128266, 239140, 256532, 320665, 478280, 513064, 641330, 705463, 1282660, 1410926, 2565320, 2821852, 3527315, 5643704, 7054630, 14109260, 28218520]

約数ペア:

[(1, 28218520), (2, 14109260), (4, 7054630), (5, 5643704), (8, 3527315), (10, 2821852), (11, 2565320), (20, 1410926), (22, 1282660), (40, 705463), (44, 641330), (55, 513064), (59, 478280), (88, 320665), (110, 256532), (118, 239140), (220, 128266), (236, 119570), (295, 95656), (440, 64133), (472, 59785), (590, 47828), (649, 43480), (1087, 25960), (1180, 23914), (1298, 21740), (2174, 12980), (2360, 11957), (2596, 10870), (3245, 8696), (4348, 6490), (5192, 5435)]