1220885240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{709817}}^1$

素因数の和:709871

約数の個数: 32

約数和(自身を含む): 2810879280

約数和(自身を除く): 1589994040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 709817, 1419634, 2839268, 3549085, 5678536, 7098170, 14196340, 28392680, 30522131, 61044262, 122088524, 152610655, 244177048, 305221310, 610442620, 1220885240]

約数ペア:

[(1, 1220885240), (2, 610442620), (4, 305221310), (5, 244177048), (8, 152610655), (10, 122088524), (20, 61044262), (40, 30522131), (43, 28392680), (86, 14196340), (172, 7098170), (215, 5678536), (344, 3549085), (430, 2839268), (860, 1419634), (1720, 709817)]