31814840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:456

約数の個数: 64

約数和(自身を含む): 74844000

約数和(自身を除く): 43029160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 53, 86, 106, 172, 212, 215, 265, 344, 349, 424, 430, 530, 698, 860, 1060, 1396, 1720, 1745, 2120, 2279, 2792, 3490, 4558, 6980, 9116, 11395, 13960, 15007, 18232, 18497, 22790, 30014, 36994, 45580, 60028, 73988, 75035, 91160, 92485, 120056, 147976, 150070, 184970, 300140, 369940, 600280, 739880, 795371, 1590742, 3181484, 3976855, 6362968, 7953710, 15907420, 31814840]

約数ペア:

[(1, 31814840), (2, 15907420), (4, 7953710), (5, 6362968), (8, 3976855), (10, 3181484), (20, 1590742), (40, 795371), (43, 739880), (53, 600280), (86, 369940), (106, 300140), (172, 184970), (212, 150070), (215, 147976), (265, 120056), (344, 92485), (349, 91160), (424, 75035), (430, 73988), (530, 60028), (698, 45580), (860, 36994), (1060, 30014), (1396, 22790), (1720, 18497), (1745, 18232), (2120, 15007), (2279, 13960), (2792, 11395), (3490, 9116), (4558, 6980)]