28720990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3929}}^1$

素因数の和:3996

約数の個数: 32

約数和(自身を含む): 56026080

約数和(自身を除く): 27305090

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 170, 215, 430, 731, 1462, 3655, 3929, 7310, 7858, 19645, 39290, 66793, 133586, 168947, 333965, 337894, 667930, 844735, 1689470, 2872099, 5744198, 14360495, 28720990]

約数ペア:

[(1, 28720990), (2, 14360495), (5, 5744198), (10, 2872099), (17, 1689470), (34, 844735), (43, 667930), (85, 337894), (86, 333965), (170, 168947), (215, 133586), (430, 66793), (731, 39290), (1462, 19645), (3655, 7858), (3929, 7310)]