209928780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{388757}}^1$

素因数の和:388775

約数の個数: 48

約数和(自身を含む): 653113440

約数和(自身を除く): 443184660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 388757, 777514, 1166271, 1555028, 1943785, 2332542, 3498813, 3887570, 4665084, 5831355, 6997626, 7775140, 10496439, 11662710, 13995252, 17494065, 20992878, 23325420, 34988130, 41985756, 52482195, 69976260, 104964390, 209928780]

約数ペア:

[(1, 209928780), (2, 104964390), (3, 69976260), (4, 52482195), (5, 41985756), (6, 34988130), (9, 23325420), (10, 20992878), (12, 17494065), (15, 13995252), (18, 11662710), (20, 10496439), (27, 7775140), (30, 6997626), (36, 5831355), (45, 4665084), (54, 3887570), (60, 3498813), (90, 2332542), (108, 1943785), (135, 1555028), (180, 1166271), (270, 777514), (540, 388757)]