81690651

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{733}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 141984960

約数和(自身を除く): 60294309

約数列:

[1, 3, 7, 9, 21, 29, 61, 63, 87, 183, 203, 261, 427, 549, 609, 733, 1281, 1769, 1827, 2199, 3843, 5131, 5307, 6597, 12383, 15393, 15921, 21257, 37149, 44713, 46179, 63771, 111447, 134139, 148799, 191313, 312991, 402417, 446397, 938973, 1296677, 1339191, 2816919, 3890031, 9076739, 11670093, 27230217, 81690651]

約数ペア:

[(1, 81690651), (3, 27230217), (7, 11670093), (9, 9076739), (21, 3890031), (29, 2816919), (61, 1339191), (63, 1296677), (87, 938973), (183, 446397), (203, 402417), (261, 312991), (427, 191313), (549, 148799), (609, 134139), (733, 111447), (1281, 63771), (1769, 46179), (1827, 44713), (2199, 37149), (3843, 21257), (5131, 15921), (5307, 15393), (6597, 12383)]