20707280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23531}}^1$

素因数の和:23555

約数の個数: 40

約数和(自身を含む): 52523424

約数和(自身を除く): 31816144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23531, 47062, 94124, 117655, 188248, 235310, 258841, 376496, 470620, 517682, 941240, 1035364, 1294205, 1882480, 2070728, 2588410, 4141456, 5176820, 10353640, 20707280]

約数ペア:

[(1, 20707280), (2, 10353640), (4, 5176820), (5, 4141456), (8, 2588410), (10, 2070728), (11, 1882480), (16, 1294205), (20, 1035364), (22, 941240), (40, 517682), (44, 470620), (55, 376496), (80, 258841), (88, 235310), (110, 188248), (176, 117655), (220, 94124), (440, 47062), (880, 23531)]