81065210

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{1289}}^1$

素因数の和:1646

約数の個数: 32

約数和(自身を含む): 154180800

約数和(自身を除く): 73115590

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 331, 662, 1289, 1655, 2578, 3310, 6289, 6445, 12578, 12890, 24491, 31445, 48982, 62890, 122455, 244910, 426659, 853318, 2133295, 4266590, 8106521, 16213042, 40532605, 81065210]

約数ペア:

[(1, 81065210), (2, 40532605), (5, 16213042), (10, 8106521), (19, 4266590), (38, 2133295), (95, 853318), (190, 426659), (331, 244910), (662, 122455), (1289, 62890), (1655, 48982), (2578, 31445), (3310, 24491), (6289, 12890), (6445, 12578)]