64875420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{821}}^1$

素因数の和:1275

約数の個数: 72

約数和(自身を含む): 197477280

約数和(自身を除く): 132601860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 439, 821, 878, 1317, 1642, 1756, 2195, 2463, 2634, 3284, 3951, 4105, 4390, 4926, 5268, 6585, 7389, 7902, 8210, 8780, 9852, 12315, 13170, 14778, 15804, 16420, 19755, 24630, 26340, 29556, 36945, 39510, 49260, 73890, 79020, 147780, 360419, 720838, 1081257, 1441676, 1802095, 2162514, 3243771, 3604190, 4325028, 5406285, 6487542, 7208380, 10812570, 12975084, 16218855, 21625140, 32437710, 64875420]

約数ペア:

[(1, 64875420), (2, 32437710), (3, 21625140), (4, 16218855), (5, 12975084), (6, 10812570), (9, 7208380), (10, 6487542), (12, 5406285), (15, 4325028), (18, 3604190), (20, 3243771), (30, 2162514), (36, 1802095), (45, 1441676), (60, 1081257), (90, 720838), (180, 360419), (439, 147780), (821, 79020), (878, 73890), (1317, 49260), (1642, 39510), (1756, 36945), (2195, 29556), (2463, 26340), (2634, 24630), (3284, 19755), (3951, 16420), (4105, 15804), (4390, 14778), (4926, 13170), (5268, 12315), (6585, 9852), (7389, 8780), (7902, 8210)]