21816720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:369

約数の個数: 120

約数和(自身を含む): 74116536

約数和(自身を除く): 52299816

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, 157, 180, 193, 240, 314, 360, 386, 471, 579, 628, 720, 772, 785, 942, 965, 1158, 1256, 1413, 1544, 1570, 1737, 1884, 1930, 2316, 2355, 2512, 2826, 2895, 3088, 3140, 3474, 3768, 3860, 4632, 4710, 5652, 5790, 6280, 6948, 7065, 7536, 7720, 8685, 9264, 9420, 11304, 11580, 12560, 13896, 14130, 15440, 17370, 18840, 22608, 23160, 27792, 28260, 30301, 34740, 37680, 46320, 56520, 60602, 69480, 90903, 113040, 121204, 138960, 151505, 181806, 242408, 272709, 303010, 363612, 454515, 484816, 545418, 606020, 727224, 909030, 1090836, 1212040, 1363545, 1454448, 1818060, 2181672, 2424080, 2727090, 3636120, 4363344, 5454180, 7272240, 10908360, 21816720]

約数ペア:

[(1, 21816720), (2, 10908360), (3, 7272240), (4, 5454180), (5, 4363344), (6, 3636120), (8, 2727090), (9, 2424080), (10, 2181672), (12, 1818060), (15, 1454448), (16, 1363545), (18, 1212040), (20, 1090836), (24, 909030), (30, 727224), (36, 606020), (40, 545418), (45, 484816), (48, 454515), (60, 363612), (72, 303010), (80, 272709), (90, 242408), (120, 181806), (144, 151505), (157, 138960), (180, 121204), (193, 113040), (240, 90903), (314, 69480), (360, 60602), (386, 56520), (471, 46320), (579, 37680), (628, 34740), (720, 30301), (772, 28260), (785, 27792), (942, 23160), (965, 22608), (1158, 18840), (1256, 17370), (1413, 15440), (1544, 14130), (1570, 13896), (1737, 12560), (1884, 11580), (1930, 11304), (2316, 9420), (2355, 9264), (2512, 8685), (2826, 7720), (2895, 7536), (3088, 7065), (3140, 6948), (3474, 6280), (3768, 5790), (3860, 5652), (4632, 4710)]