30812720

素因数分解:

$2^4\times 5^1\times {\mathrm{385159}}^1$

素因数の和:385172

約数の個数: 20

約数和(自身を含む): 71639760

約数和(自身を除く): 40827040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 385159, 770318, 1540636, 1925795, 3081272, 3851590, 6162544, 7703180, 15406360, 30812720]

約数ペア:

[(1, 30812720), (2, 15406360), (4, 7703180), (5, 6162544), (8, 3851590), (10, 3081272), (16, 1925795), (20, 1540636), (40, 770318), (80, 385159)]