20852840

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6599}}^1$

素因数の和:6689

約数の個数: 32

約数和(自身を含む): 47520000

約数和(自身を除く): 26667160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6599, 13198, 26396, 32995, 52792, 65990, 131980, 263960, 521321, 1042642, 2085284, 2606605, 4170568, 5213210, 10426420, 20852840]

約数ペア:

[(1, 20852840), (2, 10426420), (4, 5213210), (5, 4170568), (8, 2606605), (10, 2085284), (20, 1042642), (40, 521321), (79, 263960), (158, 131980), (316, 65990), (395, 52792), (632, 32995), (790, 26396), (1580, 13198), (3160, 6599)]