20730843

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 17976357

約数列:

[1, 3, 7, 9, 19, 21, 23, 27, 57, 63, 69, 133, 161, 171, 189, 207, 251, 399, 437, 483, 513, 621, 753, 1197, 1311, 1449, 1757, 2259, 3059, 3591, 3933, 4347, 4769, 5271, 5773, 6777, 9177, 11799, 14307, 15813, 17319, 27531, 33383, 40411, 42921, 47439, 51957, 82593, 100149, 109687, 121233, 128763, 155871, 300447, 329061, 363699, 767809, 901341, 987183, 1091097, 2303427, 2961549, 6910281, 20730843]

約数ペア:

[(1, 20730843), (3, 6910281), (7, 2961549), (9, 2303427), (19, 1091097), (21, 987183), (23, 901341), (27, 767809), (57, 363699), (63, 329061), (69, 300447), (133, 155871), (161, 128763), (171, 121233), (189, 109687), (207, 100149), (251, 82593), (399, 51957), (437, 47439), (483, 42921), (513, 40411), (621, 33383), (753, 27531), (1197, 17319), (1311, 15813), (1449, 14307), (1757, 11799), (2259, 9177), (3059, 6777), (3591, 5773), (3933, 5271), (4347, 4769)]