391001665

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1\times {\mathrm{281}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 504080640

約数和(自身を除く): 113078975

約数列:

[1, 5, 19, 95, 97, 151, 281, 485, 755, 1405, 1843, 2869, 5339, 9215, 14345, 14647, 26695, 27257, 42431, 73235, 136285, 212155, 278293, 517883, 806189, 1391465, 2589415, 4030945, 4115807, 20579035, 78200333, 391001665]

約数ペア:

[(1, 391001665), (5, 78200333), (19, 20579035), (95, 4115807), (97, 4030945), (151, 2589415), (281, 1391465), (485, 806189), (755, 517883), (1405, 278293), (1843, 212155), (2869, 136285), (5339, 73235), (9215, 42431), (14345, 27257), (14647, 26695)]