19851718

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:304

約数の個数: 32

約数和(自身を含む): 32497920

約数和(自身を除く): 12646202

約数列:

[1, 2, 29, 31, 58, 61, 62, 122, 181, 362, 899, 1769, 1798, 1891, 3538, 3782, 5249, 5611, 10498, 11041, 11222, 22082, 54839, 109678, 162719, 320189, 325438, 342271, 640378, 684542, 9925859, 19851718]

約数ペア:

[(1, 19851718), (2, 9925859), (29, 684542), (31, 640378), (58, 342271), (61, 325438), (62, 320189), (122, 162719), (181, 109678), (362, 54839), (899, 22082), (1769, 11222), (1798, 11041), (1891, 10498), (3538, 5611), (3782, 5249)]