20684508

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1979}}^1$

素因数の和:2066

約数の個数: 48

約数和(自身を含む): 52778880

約数和(自身を除く): 32094372

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 67, 78, 134, 156, 201, 268, 402, 804, 871, 1742, 1979, 2613, 3484, 3958, 5226, 5937, 7916, 10452, 11874, 23748, 25727, 51454, 77181, 102908, 132593, 154362, 265186, 308724, 397779, 530372, 795558, 1591116, 1723709, 3447418, 5171127, 6894836, 10342254, 20684508]

約数ペア:

[(1, 20684508), (2, 10342254), (3, 6894836), (4, 5171127), (6, 3447418), (12, 1723709), (13, 1591116), (26, 795558), (39, 530372), (52, 397779), (67, 308724), (78, 265186), (134, 154362), (156, 132593), (201, 102908), (268, 77181), (402, 51454), (804, 25727), (871, 23748), (1742, 11874), (1979, 10452), (2613, 7916), (3484, 5937), (3958, 5226)]