19749177

素因数分解:

$3^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{571}}^1$

素因数の和:651

約数の個数: 40

約数和(自身を含む): 34329152

約数和(自身を除く): 14579975

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 81, 183, 189, 427, 549, 567, 571, 1281, 1647, 1713, 3843, 3997, 4941, 5139, 11529, 11991, 15417, 34587, 34831, 35973, 46251, 104493, 107919, 243817, 313479, 323757, 731451, 940437, 2194353, 2821311, 6583059, 19749177]

約数ペア:

[(1, 19749177), (3, 6583059), (7, 2821311), (9, 2194353), (21, 940437), (27, 731451), (61, 323757), (63, 313479), (81, 243817), (183, 107919), (189, 104493), (427, 46251), (549, 35973), (567, 34831), (571, 34587), (1281, 15417), (1647, 11991), (1713, 11529), (3843, 5139), (3997, 4941)]