278328980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1\times {\mathrm{941}}^1$

素因数の和:1616

約数の個数: 48

約数和(自身を含む): 611501184

約数和(自身を除く): 333172204

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 643, 941, 1286, 1882, 2572, 3215, 3764, 4705, 6430, 9410, 12860, 14789, 18820, 21643, 29578, 43286, 59156, 73945, 86572, 108215, 147890, 216430, 295780, 432860, 605063, 1210126, 2420252, 3025315, 6050630, 12101260, 13916449, 27832898, 55665796, 69582245, 139164490, 278328980]

約数ペア:

[(1, 278328980), (2, 139164490), (4, 69582245), (5, 55665796), (10, 27832898), (20, 13916449), (23, 12101260), (46, 6050630), (92, 3025315), (115, 2420252), (230, 1210126), (460, 605063), (643, 432860), (941, 295780), (1286, 216430), (1882, 147890), (2572, 108215), (3215, 86572), (3764, 73945), (4705, 59156), (6430, 43286), (9410, 29578), (12860, 21643), (14789, 18820)]