19971736

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 64

約数和(自身を含む): 42768000

約数和(自身を除く): 22796264

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 59, 68, 76, 118, 131, 136, 152, 236, 262, 323, 472, 524, 646, 1003, 1048, 1121, 1292, 2006, 2227, 2242, 2489, 2584, 4012, 4454, 4484, 4978, 7729, 8024, 8908, 8968, 9956, 15458, 17816, 19057, 19912, 30916, 38114, 42313, 61832, 76228, 84626, 131393, 146851, 152456, 169252, 262786, 293702, 338504, 525572, 587404, 1051144, 1174808, 2496467, 4992934, 9985868, 19971736]

約数ペア:

[(1, 19971736), (2, 9985868), (4, 4992934), (8, 2496467), (17, 1174808), (19, 1051144), (34, 587404), (38, 525572), (59, 338504), (68, 293702), (76, 262786), (118, 169252), (131, 152456), (136, 146851), (152, 131393), (236, 84626), (262, 76228), (323, 61832), (472, 42313), (524, 38114), (646, 30916), (1003, 19912), (1048, 19057), (1121, 17816), (1292, 15458), (2006, 9956), (2227, 8968), (2242, 8908), (2489, 8024), (2584, 7729), (4012, 4978), (4454, 4484)]