18726915

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{263}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 31021056

約数和(自身を除く): 12294141

約数列:

[1, 3, 5, 15, 47, 101, 141, 235, 263, 303, 505, 705, 789, 1315, 1515, 3945, 4747, 12361, 14241, 23735, 26563, 37083, 61805, 71205, 79689, 132815, 185415, 398445, 1248461, 3745383, 6242305, 18726915]

約数ペア:

[(1, 18726915), (3, 6242305), (5, 3745383), (15, 1248461), (47, 398445), (101, 185415), (141, 132815), (235, 79689), (263, 71205), (303, 61805), (505, 37083), (705, 26563), (789, 23735), (1315, 14241), (1515, 12361), (3945, 4747)]