90237820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{619}}^1$

素因数の和:862

約数の個数: 48

約数和(自身を含む): 195924960

約数和(自身を除く): 105687140

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 197, 370, 394, 619, 740, 788, 985, 1238, 1970, 2476, 3095, 3940, 6190, 7289, 12380, 14578, 22903, 29156, 36445, 45806, 72890, 91612, 114515, 121943, 145780, 229030, 243886, 458060, 487772, 609715, 1219430, 2438860, 4511891, 9023782, 18047564, 22559455, 45118910, 90237820]

約数ペア:

[(1, 90237820), (2, 45118910), (4, 22559455), (5, 18047564), (10, 9023782), (20, 4511891), (37, 2438860), (74, 1219430), (148, 609715), (185, 487772), (197, 458060), (370, 243886), (394, 229030), (619, 145780), (740, 121943), (788, 114515), (985, 91612), (1238, 72890), (1970, 45806), (2476, 36445), (3095, 29156), (3940, 22903), (6190, 14578), (7289, 12380)]