15971913

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 26357760

約数和(自身を除く): 10385847

約数列:

[1, 3, 9, 19, 23, 31, 57, 69, 93, 131, 171, 207, 279, 393, 437, 589, 713, 1179, 1311, 1767, 2139, 2489, 3013, 3933, 4061, 5301, 6417, 7467, 9039, 12183, 13547, 22401, 27117, 36549, 40641, 57247, 77159, 93403, 121923, 171741, 231477, 280209, 515223, 694431, 840627, 1774657, 5323971, 15971913]

約数ペア:

[(1, 15971913), (3, 5323971), (9, 1774657), (19, 840627), (23, 694431), (31, 515223), (57, 280209), (69, 231477), (93, 171741), (131, 121923), (171, 93403), (207, 77159), (279, 57247), (393, 40641), (437, 36549), (589, 27117), (713, 22401), (1179, 13547), (1311, 12183), (1767, 9039), (2139, 7467), (2489, 6417), (3013, 5301), (3933, 4061)]