12402280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 30948480

約数和(自身を除く): 18546200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 397, 440, 568, 710, 781, 794, 1420, 1562, 1588, 1985, 2840, 3124, 3176, 3905, 3970, 4367, 6248, 7810, 7940, 8734, 15620, 15880, 17468, 21835, 28187, 31240, 34936, 43670, 56374, 87340, 112748, 140935, 174680, 225496, 281870, 310057, 563740, 620114, 1127480, 1240228, 1550285, 2480456, 3100570, 6201140, 12402280]

約数ペア:

[(1, 12402280), (2, 6201140), (4, 3100570), (5, 2480456), (8, 1550285), (10, 1240228), (11, 1127480), (20, 620114), (22, 563740), (40, 310057), (44, 281870), (55, 225496), (71, 174680), (88, 140935), (110, 112748), (142, 87340), (220, 56374), (284, 43670), (355, 34936), (397, 31240), (440, 28187), (568, 21835), (710, 17468), (781, 15880), (794, 15620), (1420, 8734), (1562, 7940), (1588, 7810), (1985, 6248), (2840, 4367), (3124, 3970), (3176, 3905)]