399321788

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{21613}}^1$

素因数の和:21797

約数の個数: 24

約数和(自身を含む): 726230400

約数和(自身を除く): 326908612

約数列:

[1, 2, 4, 31, 62, 124, 149, 298, 596, 4619, 9238, 18476, 21613, 43226, 86452, 670003, 1340006, 2680012, 3220337, 6440674, 12881348, 99830447, 199660894, 399321788]

約数ペア:

[(1, 399321788), (2, 199660894), (4, 99830447), (31, 12881348), (62, 6440674), (124, 3220337), (149, 2680012), (298, 1340006), (596, 670003), (4619, 86452), (9238, 43226), (18476, 21613)]