20377240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:436

約数の個数: 64

約数和(自身を含む): 49896000

約数和(自身を除く): 29518760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 149, 260, 263, 298, 520, 526, 596, 745, 1052, 1192, 1315, 1490, 1937, 2104, 2630, 2980, 3419, 3874, 5260, 5960, 6838, 7748, 9685, 10520, 13676, 15496, 17095, 19370, 27352, 34190, 38740, 39187, 68380, 77480, 78374, 136760, 156748, 195935, 313496, 391870, 509431, 783740, 1018862, 1567480, 2037724, 2547155, 4075448, 5094310, 10188620, 20377240]

約数ペア:

[(1, 20377240), (2, 10188620), (4, 5094310), (5, 4075448), (8, 2547155), (10, 2037724), (13, 1567480), (20, 1018862), (26, 783740), (40, 509431), (52, 391870), (65, 313496), (104, 195935), (130, 156748), (149, 136760), (260, 78374), (263, 77480), (298, 68380), (520, 39187), (526, 38740), (596, 34190), (745, 27352), (1052, 19370), (1192, 17095), (1315, 15496), (1490, 13676), (1937, 10520), (2104, 9685), (2630, 7748), (2980, 6838), (3419, 5960), (3874, 5260)]