257029020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{5689}}^1$

素因数の和:5955

約数の個数: 72

約数和(自身を含む): 782898480

約数和(自身を除く): 525869460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 251, 502, 753, 1004, 1255, 1506, 2259, 2510, 3012, 3765, 4518, 5020, 5689, 7530, 9036, 11295, 11378, 15060, 17067, 22590, 22756, 28445, 34134, 45180, 51201, 56890, 68268, 85335, 102402, 113780, 170670, 204804, 256005, 341340, 512010, 1024020, 1427939, 2855878, 4283817, 5711756, 7139695, 8567634, 12851451, 14279390, 17135268, 21419085, 25702902, 28558780, 42838170, 51405804, 64257255, 85676340, 128514510, 257029020]

約数ペア:

[(1, 257029020), (2, 128514510), (3, 85676340), (4, 64257255), (5, 51405804), (6, 42838170), (9, 28558780), (10, 25702902), (12, 21419085), (15, 17135268), (18, 14279390), (20, 12851451), (30, 8567634), (36, 7139695), (45, 5711756), (60, 4283817), (90, 2855878), (180, 1427939), (251, 1024020), (502, 512010), (753, 341340), (1004, 256005), (1255, 204804), (1506, 170670), (2259, 113780), (2510, 102402), (3012, 85335), (3765, 68268), (4518, 56890), (5020, 51201), (5689, 45180), (7530, 34134), (9036, 28445), (11295, 22756), (11378, 22590), (15060, 17067)]