21583920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{647}}^1$

素因数の和:802

約数の個数: 80

約数和(自身を含む): 67495680

約数和(自身を除く): 45911760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 139, 240, 278, 417, 556, 647, 695, 834, 1112, 1294, 1390, 1668, 1941, 2085, 2224, 2588, 2780, 3235, 3336, 3882, 4170, 5176, 5560, 6470, 6672, 7764, 8340, 9705, 10352, 11120, 12940, 15528, 16680, 19410, 25880, 31056, 33360, 38820, 51760, 77640, 89933, 155280, 179866, 269799, 359732, 449665, 539598, 719464, 899330, 1079196, 1348995, 1438928, 1798660, 2158392, 2697990, 3597320, 4316784, 5395980, 7194640, 10791960, 21583920]

約数ペア:

[(1, 21583920), (2, 10791960), (3, 7194640), (4, 5395980), (5, 4316784), (6, 3597320), (8, 2697990), (10, 2158392), (12, 1798660), (15, 1438928), (16, 1348995), (20, 1079196), (24, 899330), (30, 719464), (40, 539598), (48, 449665), (60, 359732), (80, 269799), (120, 179866), (139, 155280), (240, 89933), (278, 77640), (417, 51760), (556, 38820), (647, 33360), (695, 31056), (834, 25880), (1112, 19410), (1294, 16680), (1390, 15528), (1668, 12940), (1941, 11120), (2085, 10352), (2224, 9705), (2588, 8340), (2780, 7764), (3235, 6672), (3336, 6470), (3882, 5560), (4170, 5176)]