20817840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{683}}^1$

素因数の和:826

約数の個数: 80

約数和(自身を含む): 65138688

約数和(自身を除く): 44320848

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 127, 240, 254, 381, 508, 635, 683, 762, 1016, 1270, 1366, 1524, 1905, 2032, 2049, 2540, 2732, 3048, 3415, 3810, 4098, 5080, 5464, 6096, 6830, 7620, 8196, 10160, 10245, 10928, 13660, 15240, 16392, 20490, 27320, 30480, 32784, 40980, 54640, 81960, 86741, 163920, 173482, 260223, 346964, 433705, 520446, 693928, 867410, 1040892, 1301115, 1387856, 1734820, 2081784, 2602230, 3469640, 4163568, 5204460, 6939280, 10408920, 20817840]

約数ペア:

[(1, 20817840), (2, 10408920), (3, 6939280), (4, 5204460), (5, 4163568), (6, 3469640), (8, 2602230), (10, 2081784), (12, 1734820), (15, 1387856), (16, 1301115), (20, 1040892), (24, 867410), (30, 693928), (40, 520446), (48, 433705), (60, 346964), (80, 260223), (120, 173482), (127, 163920), (240, 86741), (254, 81960), (381, 54640), (508, 40980), (635, 32784), (683, 30480), (762, 27320), (1016, 20490), (1270, 16392), (1366, 15240), (1524, 13660), (1905, 10928), (2032, 10245), (2049, 10160), (2540, 8196), (2732, 7620), (3048, 6830), (3415, 6096), (3810, 5464), (4098, 5080)]