349936280

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{123217}}^1$

素因数の和:123299

約数の個数: 32

約数和(自身を含む): 798452640

約数和(自身を除く): 448516360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 123217, 246434, 492868, 616085, 985736, 1232170, 2464340, 4928680, 8748407, 17496814, 34993628, 43742035, 69987256, 87484070, 174968140, 349936280]

約数ペア:

[(1, 349936280), (2, 174968140), (4, 87484070), (5, 69987256), (8, 43742035), (10, 34993628), (20, 17496814), (40, 8748407), (71, 4928680), (142, 2464340), (284, 1232170), (355, 985736), (568, 616085), (710, 492868), (1420, 246434), (2840, 123217)]