21981542

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{193}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 37545984

約数和(自身を除く): 15564442

約数列:

[1, 2, 11, 22, 31, 62, 167, 193, 334, 341, 386, 682, 1837, 2123, 3674, 4246, 5177, 5983, 10354, 11966, 32231, 56947, 64462, 65813, 113894, 131626, 354541, 709082, 999161, 1998322, 10990771, 21981542]

約数ペア:

[(1, 21981542), (2, 10990771), (11, 1998322), (22, 999161), (31, 709082), (62, 354541), (167, 131626), (193, 113894), (334, 65813), (341, 64462), (386, 56947), (682, 32231), (1837, 11966), (2123, 10354), (3674, 5983), (4246, 5177)]