20168631

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 35942400

約数和(自身を除く): 15773769

約数列:

[1, 3, 7, 9, 21, 23, 31, 63, 69, 93, 161, 207, 217, 279, 449, 483, 651, 713, 1347, 1449, 1953, 2139, 3143, 4041, 4991, 6417, 9429, 10327, 13919, 14973, 28287, 30981, 41757, 44919, 72289, 92943, 97433, 125271, 216867, 292299, 320137, 650601, 876897, 960411, 2240959, 2881233, 6722877, 20168631]

約数ペア:

[(1, 20168631), (3, 6722877), (7, 2881233), (9, 2240959), (21, 960411), (23, 876897), (31, 650601), (63, 320137), (69, 292299), (93, 216867), (161, 125271), (207, 97433), (217, 92943), (279, 72289), (449, 44919), (483, 41757), (651, 30981), (713, 28287), (1347, 14973), (1449, 13919), (1953, 10327), (2139, 9429), (3143, 6417), (4041, 4991)]