1999334440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{703991}}^1$

素因数の和:704073

約数の個数: 32

約数和(自身を含む): 4561868160

約数和(自身を除く): 2562533720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 703991, 1407982, 2815964, 3519955, 5631928, 7039910, 14079820, 28159640, 49983361, 99966722, 199933444, 249916805, 399866888, 499833610, 999667220, 1999334440]

約数ペア:

[(1, 1999334440), (2, 999667220), (4, 499833610), (5, 399866888), (8, 249916805), (10, 199933444), (20, 99966722), (40, 49983361), (71, 28159640), (142, 14079820), (284, 7039910), (355, 5631928), (568, 3519955), (710, 2815964), (1420, 1407982), (2840, 703991)]