12802840

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1217}}^1$

素因数の和:1491

約数の個数: 32

約数和(自身を含む): 28939680

約数和(自身を除く): 16136840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1217, 1315, 2104, 2434, 2630, 4868, 5260, 6085, 9736, 10520, 12170, 24340, 48680, 320071, 640142, 1280284, 1600355, 2560568, 3200710, 6401420, 12802840]

約数ペア:

[(1, 12802840), (2, 6401420), (4, 3200710), (5, 2560568), (8, 1600355), (10, 1280284), (20, 640142), (40, 320071), (263, 48680), (526, 24340), (1052, 12170), (1217, 10520), (1315, 9736), (2104, 6085), (2434, 5260), (2630, 4868)]