19987808

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{20149}}^1$

素因数の和:20190

約数の個数: 24

約数和(自身を含む): 40622400

約数和(自身を除く): 20634592

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992, 20149, 40298, 80596, 161192, 322384, 624619, 644768, 1249238, 2498476, 4996952, 9993904, 19987808]

約数ペア:

[(1, 19987808), (2, 9993904), (4, 4996952), (8, 2498476), (16, 1249238), (31, 644768), (32, 624619), (62, 322384), (124, 161192), (248, 80596), (496, 40298), (992, 20149)]