18881316

素因数分解:

$2^2\times 3^3\times {\mathrm{79}}^1\times {\mathrm{2213}}^1$

素因数の和:2305

約数の個数: 48

約数和(自身を含む): 49593600

約数和(自身を除く): 30712284

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 79, 108, 158, 237, 316, 474, 711, 948, 1422, 2133, 2213, 2844, 4266, 4426, 6639, 8532, 8852, 13278, 19917, 26556, 39834, 59751, 79668, 119502, 174827, 239004, 349654, 524481, 699308, 1048962, 1573443, 2097924, 3146886, 4720329, 6293772, 9440658, 18881316]

約数ペア:

[(1, 18881316), (2, 9440658), (3, 6293772), (4, 4720329), (6, 3146886), (9, 2097924), (12, 1573443), (18, 1048962), (27, 699308), (36, 524481), (54, 349654), (79, 239004), (108, 174827), (158, 119502), (237, 79668), (316, 59751), (474, 39834), (711, 26556), (948, 19917), (1422, 13278), (2133, 8852), (2213, 8532), (2844, 6639), (4266, 4426)]