15721819197

素因数分解:

$3^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{727}}^1\times {\mathrm{1123}}^1$

素因数の和:1998

約数の個数: 48

約数和(自身を含む): 24626714112

約数和(自身を除く): 8904894915

約数列:

[1, 3, 7, 21, 49, 131, 147, 393, 727, 917, 1123, 2181, 2751, 3369, 5089, 6419, 7861, 15267, 19257, 23583, 35623, 55027, 95237, 106869, 147113, 165081, 285711, 441339, 666659, 816421, 1029791, 1999977, 2449263, 3089373, 4666613, 5714947, 7208537, 13999839, 17144841, 21625611, 40004629, 106951151, 120013887, 320853453, 748658057, 2245974171, 5240606399, 15721819197]

約数ペア:

[(1, 15721819197), (3, 5240606399), (7, 2245974171), (21, 748658057), (49, 320853453), (131, 120013887), (147, 106951151), (393, 40004629), (727, 21625611), (917, 17144841), (1123, 13999839), (2181, 7208537), (2751, 5714947), (3369, 4666613), (5089, 3089373), (6419, 2449263), (7861, 1999977), (15267, 1029791), (19257, 816421), (23583, 666659), (35623, 441339), (55027, 285711), (95237, 165081), (106869, 147113)]