129339220

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{13171}}^1$

素因数の和:13671

約数の個数: 24

約数和(自身を含む): 272186208

約数和(自身を除く): 142846988

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 9820, 13171, 26342, 52684, 65855, 131710, 263420, 6466961, 12933922, 25867844, 32334805, 64669610, 129339220]

約数ペア:

[(1, 129339220), (2, 64669610), (4, 32334805), (5, 25867844), (10, 12933922), (20, 6466961), (491, 263420), (982, 131710), (1964, 65855), (2455, 52684), (4910, 26342), (9820, 13171)]