20079290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{293}}^1$

素因数の和:407

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 25643590

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 89, 110, 154, 178, 293, 385, 445, 586, 623, 770, 890, 979, 1246, 1465, 1958, 2051, 2930, 3115, 3223, 4102, 4895, 6230, 6446, 6853, 9790, 10255, 13706, 16115, 20510, 22561, 26077, 32230, 34265, 45122, 52154, 68530, 112805, 130385, 182539, 225610, 260770, 286847, 365078, 573694, 912695, 1434235, 1825390, 2007929, 2868470, 4015858, 10039645, 20079290]

約数ペア:

[(1, 20079290), (2, 10039645), (5, 4015858), (7, 2868470), (10, 2007929), (11, 1825390), (14, 1434235), (22, 912695), (35, 573694), (55, 365078), (70, 286847), (77, 260770), (89, 225610), (110, 182539), (154, 130385), (178, 112805), (293, 68530), (385, 52154), (445, 45122), (586, 34265), (623, 32230), (770, 26077), (890, 22561), (979, 20510), (1246, 16115), (1465, 13706), (1958, 10255), (2051, 9790), (2930, 6853), (3115, 6446), (3223, 6230), (4102, 4895)]