385640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 898560

約数和(自身を除く): 512920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 311, 620, 622, 1240, 1244, 1555, 2488, 3110, 6220, 9641, 12440, 19282, 38564, 48205, 77128, 96410, 192820, 385640]

約数ペア:

[(1, 385640), (2, 192820), (4, 96410), (5, 77128), (8, 48205), (10, 38564), (20, 19282), (31, 12440), (40, 9641), (62, 6220), (124, 3110), (155, 2488), (248, 1555), (310, 1244), (311, 1240), (620, 622)]