12812660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1289}}^1$

素因数の和:1376

約数の個数: 48

約数和(自身を含む): 31207680

約数和(自身を除く): 18395020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1289, 1420, 1988, 2485, 2578, 4970, 5156, 6445, 9023, 9940, 12890, 18046, 25780, 36092, 45115, 90230, 91519, 180460, 183038, 366076, 457595, 640633, 915190, 1281266, 1830380, 2562532, 3203165, 6406330, 12812660]

約数ペア:

[(1, 12812660), (2, 6406330), (4, 3203165), (5, 2562532), (7, 1830380), (10, 1281266), (14, 915190), (20, 640633), (28, 457595), (35, 366076), (70, 183038), (71, 180460), (140, 91519), (142, 90230), (284, 45115), (355, 36092), (497, 25780), (710, 18046), (994, 12890), (1289, 9940), (1420, 9023), (1988, 6445), (2485, 5156), (2578, 4970)]