19756688

素因数分解:

$2^4\times 7^1\times {\mathrm{419}}^1\times {\mathrm{421}}^1$

素因数の和:855

約数の個数: 40

約数和(自身を含む): 43955520

約数和(自身を除く): 24198832

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 419, 421, 838, 842, 1676, 1684, 2933, 2947, 3352, 3368, 5866, 5894, 6704, 6736, 11732, 11788, 23464, 23576, 46928, 47152, 176399, 352798, 705596, 1234793, 1411192, 2469586, 2822384, 4939172, 9878344, 19756688]

約数ペア:

[(1, 19756688), (2, 9878344), (4, 4939172), (7, 2822384), (8, 2469586), (14, 1411192), (16, 1234793), (28, 705596), (56, 352798), (112, 176399), (419, 47152), (421, 46928), (838, 23576), (842, 23464), (1676, 11788), (1684, 11732), (2933, 6736), (2947, 6704), (3352, 5894), (3368, 5866)]