397194640

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{18457}}^1$

素因数の和:18739

約数の個数: 40

約数和(自身を含む): 926960760

約数和(自身を除く): 529766120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 1076, 1345, 2152, 2690, 4304, 5380, 10760, 18457, 21520, 36914, 73828, 92285, 147656, 184570, 295312, 369140, 738280, 1476560, 4964933, 9929866, 19859732, 24824665, 39719464, 49649330, 79438928, 99298660, 198597320, 397194640]

約数ペア:

[(1, 397194640), (2, 198597320), (4, 99298660), (5, 79438928), (8, 49649330), (10, 39719464), (16, 24824665), (20, 19859732), (40, 9929866), (80, 4964933), (269, 1476560), (538, 738280), (1076, 369140), (1345, 295312), (2152, 184570), (2690, 147656), (4304, 92285), (5380, 73828), (10760, 36914), (18457, 21520)]