80971905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{7487}}^1$

素因数の和:7605

約数の個数: 32

約数和(自身を含む): 149520384

約数和(自身を除く): 68548479

約数列:

[1, 3, 5, 7, 15, 21, 35, 103, 105, 309, 515, 721, 1545, 2163, 3605, 7487, 10815, 22461, 37435, 52409, 112305, 157227, 262045, 771161, 786135, 2313483, 3855805, 5398127, 11567415, 16194381, 26990635, 80971905]

約数ペア:

[(1, 80971905), (3, 26990635), (5, 16194381), (7, 11567415), (15, 5398127), (21, 3855805), (35, 2313483), (103, 786135), (105, 771161), (309, 262045), (515, 157227), (721, 112305), (1545, 52409), (2163, 37435), (3605, 22461), (7487, 10815)]