1988973

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 3322176

約数和(自身を除く): 1333203

約数列:

[1, 3, 7, 9, 21, 63, 131, 241, 393, 723, 917, 1179, 1687, 2169, 2751, 5061, 8253, 15183, 31571, 94713, 220997, 284139, 662991, 1988973]

約数ペア:

[(1, 1988973), (3, 662991), (7, 284139), (9, 220997), (21, 94713), (63, 31571), (131, 15183), (241, 8253), (393, 5061), (723, 2751), (917, 2169), (1179, 1687)]