1639117870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{406729}}^1$

素因数の和:406780

約数の個数: 32

約数和(自身を含む): 3279870720

約数和(自身を除く): 1640752850

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 406729, 813458, 2033645, 4067290, 5287477, 10574954, 12608599, 25217198, 26437385, 52874770, 63042995, 126085990, 163911787, 327823574, 819558935, 1639117870]

約数ペア:

[(1, 1639117870), (2, 819558935), (5, 327823574), (10, 163911787), (13, 126085990), (26, 63042995), (31, 52874770), (62, 26437385), (65, 25217198), (130, 12608599), (155, 10574954), (310, 5287477), (403, 4067290), (806, 2033645), (2015, 813458), (4030, 406729)]