28238980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1667}}^1$

素因数の和:1705

約数の個数: 72

約数和(自身を含む): 74539584

約数和(自身を除く): 46300604

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1540, 1667, 1694, 2420, 3334, 3388, 4235, 6668, 8335, 8470, 11669, 16670, 16940, 18337, 23338, 33340, 36674, 46676, 58345, 73348, 91685, 116690, 128359, 183370, 201707, 233380, 256718, 366740, 403414, 513436, 641795, 806828, 1008535, 1283590, 1411949, 2017070, 2567180, 2823898, 4034140, 5647796, 7059745, 14119490, 28238980]

約数ペア:

[(1, 28238980), (2, 14119490), (4, 7059745), (5, 5647796), (7, 4034140), (10, 2823898), (11, 2567180), (14, 2017070), (20, 1411949), (22, 1283590), (28, 1008535), (35, 806828), (44, 641795), (55, 513436), (70, 403414), (77, 366740), (110, 256718), (121, 233380), (140, 201707), (154, 183370), (220, 128359), (242, 116690), (308, 91685), (385, 73348), (484, 58345), (605, 46676), (770, 36674), (847, 33340), (1210, 23338), (1540, 18337), (1667, 16940), (1694, 16670), (2420, 11669), (3334, 8470), (3388, 8335), (4235, 6668)]