2789840

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:867

約数の個数: 40

約数和(自身を含む): 6645408

約数和(自身を除く): 3855568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 811, 860, 1622, 1720, 3244, 3440, 4055, 6488, 8110, 12976, 16220, 32440, 34873, 64880, 69746, 139492, 174365, 278984, 348730, 557968, 697460, 1394920, 2789840]

約数ペア:

[(1, 2789840), (2, 1394920), (4, 697460), (5, 557968), (8, 348730), (10, 278984), (16, 174365), (20, 139492), (40, 69746), (43, 64880), (80, 34873), (86, 32440), (172, 16220), (215, 12976), (344, 8110), (430, 6488), (688, 4055), (811, 3440), (860, 3244), (1622, 1720)]