20643700

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{383}}^1$

素因数の和:422

約数の個数: 108

約数和(自身を含む): 56996352

約数和(自身を除く): 36352652

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 49, 50, 55, 70, 77, 98, 100, 110, 140, 154, 175, 196, 220, 245, 275, 308, 350, 383, 385, 490, 539, 550, 700, 766, 770, 980, 1078, 1100, 1225, 1532, 1540, 1915, 1925, 2156, 2450, 2681, 2695, 3830, 3850, 4213, 4900, 5362, 5390, 7660, 7700, 8426, 9575, 10724, 10780, 13405, 13475, 16852, 18767, 19150, 21065, 26810, 26950, 29491, 37534, 38300, 42130, 53620, 53900, 58982, 67025, 75068, 84260, 93835, 105325, 117964, 134050, 147455, 187670, 206437, 210650, 268100, 294910, 375340, 412874, 421300, 469175, 589820, 737275, 825748, 938350, 1032185, 1474550, 1876700, 2064370, 2949100, 4128740, 5160925, 10321850, 20643700]

約数ペア:

[(1, 20643700), (2, 10321850), (4, 5160925), (5, 4128740), (7, 2949100), (10, 2064370), (11, 1876700), (14, 1474550), (20, 1032185), (22, 938350), (25, 825748), (28, 737275), (35, 589820), (44, 469175), (49, 421300), (50, 412874), (55, 375340), (70, 294910), (77, 268100), (98, 210650), (100, 206437), (110, 187670), (140, 147455), (154, 134050), (175, 117964), (196, 105325), (220, 93835), (245, 84260), (275, 75068), (308, 67025), (350, 58982), (383, 53900), (385, 53620), (490, 42130), (539, 38300), (550, 37534), (700, 29491), (766, 26950), (770, 26810), (980, 21065), (1078, 19150), (1100, 18767), (1225, 16852), (1532, 13475), (1540, 13405), (1915, 10780), (1925, 10724), (2156, 9575), (2450, 8426), (2681, 7700), (2695, 7660), (3830, 5390), (3850, 5362), (4213, 4900)]