19999340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32257}}^1$

素因数の和:32297

約数の個数: 24

約数和(自身を含む): 43354752

約数和(自身を除く): 23355412

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32257, 64514, 129028, 161285, 322570, 645140, 999967, 1999934, 3999868, 4999835, 9999670, 19999340]

約数ペア:

[(1, 19999340), (2, 9999670), (4, 4999835), (5, 3999868), (10, 1999934), (20, 999967), (31, 645140), (62, 322570), (124, 161285), (155, 129028), (310, 64514), (620, 32257)]