21625140

素因数分解:

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

素因数の和:1272

約数の個数: 48

約数和(自身を含む): 60762240

約数和(自身を除く): 39137100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 439, 821, 878, 1317, 1642, 1756, 2195, 2463, 2634, 3284, 4105, 4390, 4926, 5268, 6585, 8210, 8780, 9852, 12315, 13170, 16420, 24630, 26340, 49260, 360419, 720838, 1081257, 1441676, 1802095, 2162514, 3604190, 4325028, 5406285, 7208380, 10812570, 21625140]

約数ペア:

[(1, 21625140), (2, 10812570), (3, 7208380), (4, 5406285), (5, 4325028), (6, 3604190), (10, 2162514), (12, 1802095), (15, 1441676), (20, 1081257), (30, 720838), (60, 360419), (439, 49260), (821, 26340), (878, 24630), (1317, 16420), (1642, 13170), (1756, 12315), (2195, 9852), (2463, 8780), (2634, 8210), (3284, 6585), (4105, 5268), (4390, 4926)]