20515940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{727}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 25714972

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 83, 85, 166, 170, 332, 340, 415, 727, 830, 1411, 1454, 1660, 2822, 2908, 3635, 5644, 7055, 7270, 12359, 14110, 14540, 24718, 28220, 49436, 60341, 61795, 120682, 123590, 241364, 247180, 301705, 603410, 1025797, 1206820, 2051594, 4103188, 5128985, 10257970, 20515940]

約数ペア:

[(1, 20515940), (2, 10257970), (4, 5128985), (5, 4103188), (10, 2051594), (17, 1206820), (20, 1025797), (34, 603410), (68, 301705), (83, 247180), (85, 241364), (166, 123590), (170, 120682), (332, 61795), (340, 60341), (415, 49436), (727, 28220), (830, 24718), (1411, 14540), (1454, 14110), (1660, 12359), (2822, 7270), (2908, 7055), (3635, 5644)]