20495090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{619}}^1$

素因数の和:687

約数の個数: 64

約数和(自身を含む): 47139840

約数和(自身を除く): 26644750

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 43, 55, 70, 77, 86, 110, 154, 215, 301, 385, 430, 473, 602, 619, 770, 946, 1238, 1505, 2365, 3010, 3095, 3311, 4333, 4730, 6190, 6622, 6809, 8666, 13618, 16555, 21665, 26617, 33110, 34045, 43330, 47663, 53234, 68090, 95326, 133085, 186319, 238315, 266170, 292787, 372638, 476630, 585574, 931595, 1463935, 1863190, 2049509, 2927870, 4099018, 10247545, 20495090]

約数ペア:

[(1, 20495090), (2, 10247545), (5, 4099018), (7, 2927870), (10, 2049509), (11, 1863190), (14, 1463935), (22, 931595), (35, 585574), (43, 476630), (55, 372638), (70, 292787), (77, 266170), (86, 238315), (110, 186319), (154, 133085), (215, 95326), (301, 68090), (385, 53234), (430, 47663), (473, 43330), (602, 34045), (619, 33110), (770, 26617), (946, 21665), (1238, 16555), (1505, 13618), (2365, 8666), (3010, 6809), (3095, 6622), (3311, 6190), (4333, 4730)]