20121479172

素因数分解:

$2^2\times 3^2\times {\mathrm{79}}^1\times {\mathrm{1823}}^1\times {\mathrm{3881}}^1$

素因数の和:5793

約数の個数: 72

約数和(自身を含む): 51547991040

約数和(自身を除く): 31426511868

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 79, 158, 237, 316, 474, 711, 948, 1422, 1823, 2844, 3646, 3881, 5469, 7292, 7762, 10938, 11643, 15524, 16407, 21876, 23286, 32814, 34929, 46572, 65628, 69858, 139716, 144017, 288034, 306599, 432051, 576068, 613198, 864102, 919797, 1226396, 1296153, 1728204, 1839594, 2592306, 2759391, 3679188, 5184612, 5518782, 7075063, 11037564, 14150126, 21225189, 28300252, 42450378, 63675567, 84900756, 127351134, 254702268, 558929977, 1117859954, 1676789931, 2235719908, 3353579862, 5030369793, 6707159724, 10060739586, 20121479172]

約数ペア:

[(1, 20121479172), (2, 10060739586), (3, 6707159724), (4, 5030369793), (6, 3353579862), (9, 2235719908), (12, 1676789931), (18, 1117859954), (36, 558929977), (79, 254702268), (158, 127351134), (237, 84900756), (316, 63675567), (474, 42450378), (711, 28300252), (948, 21225189), (1422, 14150126), (1823, 11037564), (2844, 7075063), (3646, 5518782), (3881, 5184612), (5469, 3679188), (7292, 2759391), (7762, 2592306), (10938, 1839594), (11643, 1728204), (15524, 1296153), (16407, 1226396), (21876, 919797), (23286, 864102), (32814, 613198), (34929, 576068), (46572, 432051), (65628, 306599), (69858, 288034), (139716, 144017)]