20499404

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 19417396

約数列:

[1, 2, 4, 19, 29, 38, 58, 71, 76, 116, 131, 142, 262, 284, 524, 551, 1102, 1349, 2059, 2204, 2489, 2698, 3799, 4118, 4978, 5396, 7598, 8236, 9301, 9956, 15196, 18602, 37204, 39121, 72181, 78242, 144362, 156484, 176719, 269729, 288724, 353438, 539458, 706876, 1078916, 5124851, 10249702, 20499404]

約数ペア:

[(1, 20499404), (2, 10249702), (4, 5124851), (19, 1078916), (29, 706876), (38, 539458), (58, 353438), (71, 288724), (76, 269729), (116, 176719), (131, 156484), (142, 144362), (262, 78242), (284, 72181), (524, 39121), (551, 37204), (1102, 18602), (1349, 15196), (2059, 9956), (2204, 9301), (2489, 8236), (2698, 7598), (3799, 5396), (4118, 4978)]