7981995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4001}}^1$

素因数の和:4035

約数の個数: 32

約数和(自身を含む): 15367680

約数和(自身を除く): 7385685

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 4001, 12003, 20005, 28007, 60015, 76019, 84021, 140035, 228057, 380095, 420105, 532133, 1140285, 1596399, 2660665, 7981995]

約数ペア:

[(1, 7981995), (3, 2660665), (5, 1596399), (7, 1140285), (15, 532133), (19, 420105), (21, 380095), (35, 228057), (57, 140035), (95, 84021), (105, 76019), (133, 60015), (285, 28007), (399, 20005), (665, 12003), (1995, 4001)]