20635920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28661}}^1$

素因数の和:28680

約数の個数: 60

約数和(自身を含む): 69304716

約数和(自身を除く): 48668796

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28661, 57322, 85983, 114644, 143305, 171966, 229288, 257949, 286610, 343932, 429915, 458576, 515898, 573220, 687864, 859830, 1031796, 1146440, 1289745, 1375728, 1719660, 2063592, 2292880, 2579490, 3439320, 4127184, 5158980, 6878640, 10317960, 20635920]

約数ペア:

[(1, 20635920), (2, 10317960), (3, 6878640), (4, 5158980), (5, 4127184), (6, 3439320), (8, 2579490), (9, 2292880), (10, 2063592), (12, 1719660), (15, 1375728), (16, 1289745), (18, 1146440), (20, 1031796), (24, 859830), (30, 687864), (36, 573220), (40, 515898), (45, 458576), (48, 429915), (60, 343932), (72, 286610), (80, 257949), (90, 229288), (120, 171966), (144, 143305), (180, 114644), (240, 85983), (360, 57322), (720, 28661)]