21891518

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{32099}}^1$

素因数の和:32143

約数の個数: 16

約数和(自身を含む): 36979200

約数和(自身を除く): 15087682

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 32099, 64198, 353089, 706178, 995069, 1990138, 10945759, 21891518]

約数ペア:

[(1, 21891518), (2, 10945759), (11, 1990138), (22, 995069), (31, 706178), (62, 353089), (341, 64198), (682, 32099)]