71039180

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1\times {\mathrm{397}}^1$

素因数の和:818

約数の個数: 48

約数和(自身を含む): 156461760

約数和(自身を除く): 85422580

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 389, 397, 460, 778, 794, 1556, 1588, 1945, 1985, 3890, 3970, 7780, 7940, 8947, 9131, 17894, 18262, 35788, 36524, 44735, 45655, 89470, 91310, 154433, 178940, 182620, 308866, 617732, 772165, 1544330, 3088660, 3551959, 7103918, 14207836, 17759795, 35519590, 71039180]

約数ペア:

[(1, 71039180), (2, 35519590), (4, 17759795), (5, 14207836), (10, 7103918), (20, 3551959), (23, 3088660), (46, 1544330), (92, 772165), (115, 617732), (230, 308866), (389, 182620), (397, 178940), (460, 154433), (778, 91310), (794, 89470), (1556, 45655), (1588, 44735), (1945, 36524), (1985, 35788), (3890, 18262), (3970, 17894), (7780, 9131), (7940, 8947)]