211674519

素因数分解:

$3^3\times 7^1\times {\mathrm{491}}^1\times {\mathrm{2281}}^1$

素因数の和:2788

約数の個数: 32

約数和(自身を含む): 359278080

約数和(自身を除く): 147603561

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 491, 1473, 2281, 3437, 4419, 6843, 10311, 13257, 15967, 20529, 30933, 47901, 61587, 92799, 143703, 431109, 1119971, 3359913, 7839797, 10079739, 23519391, 30239217, 70558173, 211674519]

約数ペア:

[(1, 211674519), (3, 70558173), (7, 30239217), (9, 23519391), (21, 10079739), (27, 7839797), (63, 3359913), (189, 1119971), (491, 431109), (1473, 143703), (2281, 92799), (3437, 61587), (4419, 47901), (6843, 30933), (10311, 20529), (13257, 15967)]