28049240

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7879}}^1$

素因数の和:7979

約数の個数: 32

約数和(自身を含む): 63828000

約数和(自身を除く): 35778760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 7879, 15758, 31516, 39395, 63032, 78790, 157580, 315160, 701231, 1402462, 2804924, 3506155, 5609848, 7012310, 14024620, 28049240]

約数ペア:

[(1, 28049240), (2, 14024620), (4, 7012310), (5, 5609848), (8, 3506155), (10, 2804924), (20, 1402462), (40, 701231), (89, 315160), (178, 157580), (356, 78790), (445, 63032), (712, 39395), (890, 31516), (1780, 15758), (3560, 7879)]