28747740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{68447}}^1$

素因数の和:68466

約数の個数: 48

約数和(自身を含む): 91994112

約数和(自身を除く): 63246372

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 68447, 136894, 205341, 273788, 342235, 410682, 479129, 684470, 821364, 958258, 1026705, 1368940, 1437387, 1916516, 2053410, 2395645, 2874774, 4106820, 4791290, 5749548, 7186935, 9582580, 14373870, 28747740]

約数ペア:

[(1, 28747740), (2, 14373870), (3, 9582580), (4, 7186935), (5, 5749548), (6, 4791290), (7, 4106820), (10, 2874774), (12, 2395645), (14, 2053410), (15, 1916516), (20, 1437387), (21, 1368940), (28, 1026705), (30, 958258), (35, 821364), (42, 684470), (60, 479129), (70, 410682), (84, 342235), (105, 273788), (140, 205341), (210, 136894), (420, 68447)]