420190640

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{48187}}^1$

素因数の和:48309

約数の個数: 40

約数和(自身を含む): 985926480

約数和(自身を除く): 565735840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 48187, 96374, 192748, 240935, 385496, 481870, 770992, 963740, 1927480, 3854960, 5252383, 10504766, 21009532, 26261915, 42019064, 52523830, 84038128, 105047660, 210095320, 420190640]

約数ペア:

[(1, 420190640), (2, 210095320), (4, 105047660), (5, 84038128), (8, 52523830), (10, 42019064), (16, 26261915), (20, 21009532), (40, 10504766), (80, 5252383), (109, 3854960), (218, 1927480), (436, 963740), (545, 770992), (872, 481870), (1090, 385496), (1744, 240935), (2180, 192748), (4360, 96374), (8720, 48187)]