19882840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7001}}^1$

素因数の和:7083

約数の個数: 32

約数和(自身を含む): 45372960

約数和(自身を除く): 25490120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7001, 14002, 28004, 35005, 56008, 70010, 140020, 280040, 497071, 994142, 1988284, 2485355, 3976568, 4970710, 9941420, 19882840]

約数ペア:

[(1, 19882840), (2, 9941420), (4, 4970710), (5, 3976568), (8, 2485355), (10, 1988284), (20, 994142), (40, 497071), (71, 280040), (142, 140020), (284, 70010), (355, 56008), (568, 35005), (710, 28004), (1420, 14002), (2840, 7001)]