18120915

素因数分解:

$3^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{443}}^1$

素因数の和:561

約数の個数: 40

約数和(自身を含む): 32879088

約数和(自身を除く): 14758173

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 101, 135, 303, 405, 443, 505, 909, 1329, 1515, 2215, 2727, 3987, 4545, 6645, 8181, 11961, 13635, 19935, 35883, 40905, 44743, 59805, 134229, 179415, 223715, 402687, 671145, 1208061, 2013435, 3624183, 6040305, 18120915]

約数ペア:

[(1, 18120915), (3, 6040305), (5, 3624183), (9, 2013435), (15, 1208061), (27, 671145), (45, 402687), (81, 223715), (101, 179415), (135, 134229), (303, 59805), (405, 44743), (443, 40905), (505, 35883), (909, 19935), (1329, 13635), (1515, 11961), (2215, 8181), (2727, 6645), (3987, 4545)]