256809890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{739}}^1$

素因数の和:855

約数の個数: 64

約数和(自身を含む): 511488000

約数和(自身を除く): 254678110

約数列:

[1, 2, 5, 10, 19, 31, 38, 59, 62, 95, 118, 155, 190, 295, 310, 589, 590, 739, 1121, 1178, 1478, 1829, 2242, 2945, 3658, 3695, 5605, 5890, 7390, 9145, 11210, 14041, 18290, 22909, 28082, 34751, 43601, 45818, 69502, 70205, 87202, 114545, 140410, 173755, 218005, 229090, 347510, 435271, 436010, 828419, 870542, 1351631, 1656838, 2176355, 2703262, 4142095, 4352710, 6758155, 8284190, 13516310, 25680989, 51361978, 128404945, 256809890]

約数ペア:

[(1, 256809890), (2, 128404945), (5, 51361978), (10, 25680989), (19, 13516310), (31, 8284190), (38, 6758155), (59, 4352710), (62, 4142095), (95, 2703262), (118, 2176355), (155, 1656838), (190, 1351631), (295, 870542), (310, 828419), (589, 436010), (590, 435271), (739, 347510), (1121, 229090), (1178, 218005), (1478, 173755), (1829, 140410), (2242, 114545), (2945, 87202), (3658, 70205), (3695, 69502), (5605, 45818), (5890, 43601), (7390, 34751), (9145, 28082), (11210, 22909), (14041, 18290)]