20570720

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1549}}^1$

素因数の和:1647

約数の個数: 48

約数和(自身を含む): 49215600

約数和(自身を除く): 28644880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 1328, 1549, 1660, 2656, 3098, 3320, 6196, 6640, 7745, 12392, 13280, 15490, 24784, 30980, 49568, 61960, 123920, 128567, 247840, 257134, 514268, 642835, 1028536, 1285670, 2057072, 2571340, 4114144, 5142680, 10285360, 20570720]

約数ペア:

[(1, 20570720), (2, 10285360), (4, 5142680), (5, 4114144), (8, 2571340), (10, 2057072), (16, 1285670), (20, 1028536), (32, 642835), (40, 514268), (80, 257134), (83, 247840), (160, 128567), (166, 123920), (332, 61960), (415, 49568), (664, 30980), (830, 24784), (1328, 15490), (1549, 13280), (1660, 12392), (2656, 7745), (3098, 6640), (3320, 6196)]