81909260

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{12373}}^1$

素因数の和:12713

約数の個数: 24

約数和(自身を含む): 172543056

約数和(自身を除く): 90633796

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3310, 6620, 12373, 24746, 49492, 61865, 123730, 247460, 4095463, 8190926, 16381852, 20477315, 40954630, 81909260]

約数ペア:

[(1, 81909260), (2, 40954630), (4, 20477315), (5, 16381852), (10, 8190926), (20, 4095463), (331, 247460), (662, 123730), (1324, 61865), (1655, 49492), (3310, 24746), (6620, 12373)]