408408020

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{118037}}^1$

素因数の和:118219

約数の個数: 24

約数和(自身を含む): 862621704

約数和(自身を除く): 454213684

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 118037, 236074, 472148, 590185, 1180370, 2360740, 20420401, 40840802, 81681604, 102102005, 204204010, 408408020]

約数ペア:

[(1, 408408020), (2, 204204010), (4, 102102005), (5, 81681604), (10, 40840802), (20, 20420401), (173, 2360740), (346, 1180370), (692, 590185), (865, 472148), (1730, 236074), (3460, 118037)]