19990764

素因数分解:

$2^2\times 3^2\times {\mathrm{421}}^1\times {\mathrm{1319}}^1$

素因数の和:1750

約数の個数: 36

約数和(自身を含む): 50690640

約数和(自身を除く): 30699876

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 421, 842, 1263, 1319, 1684, 2526, 2638, 3789, 3957, 5052, 5276, 7578, 7914, 11871, 15156, 15828, 23742, 47484, 555299, 1110598, 1665897, 2221196, 3331794, 4997691, 6663588, 9995382, 19990764]

約数ペア:

[(1, 19990764), (2, 9995382), (3, 6663588), (4, 4997691), (6, 3331794), (9, 2221196), (12, 1665897), (18, 1110598), (36, 555299), (421, 47484), (842, 23742), (1263, 15828), (1319, 15156), (1684, 11871), (2526, 7914), (2638, 7578), (3789, 5276), (3957, 5052)]