20804630

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:725

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 27095530

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 41, 55, 70, 77, 82, 110, 154, 205, 287, 385, 410, 451, 574, 659, 770, 902, 1318, 1435, 2255, 2870, 3157, 3295, 4510, 4613, 6314, 6590, 7249, 9226, 14498, 15785, 23065, 27019, 31570, 36245, 46130, 50743, 54038, 72490, 101486, 135095, 189133, 253715, 270190, 297209, 378266, 507430, 594418, 945665, 1486045, 1891330, 2080463, 2972090, 4160926, 10402315, 20804630]

約数ペア:

[(1, 20804630), (2, 10402315), (5, 4160926), (7, 2972090), (10, 2080463), (11, 1891330), (14, 1486045), (22, 945665), (35, 594418), (41, 507430), (55, 378266), (70, 297209), (77, 270190), (82, 253715), (110, 189133), (154, 135095), (205, 101486), (287, 72490), (385, 54038), (410, 50743), (451, 46130), (574, 36245), (659, 31570), (770, 27019), (902, 23065), (1318, 15785), (1435, 14498), (2255, 9226), (2870, 7249), (3157, 6590), (3295, 6314), (4510, 4613)]