21543375

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:337

約数の個数: 64

約数和(自身を含む): 42531840

約数和(自身を除く): 20988465

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 75, 87, 105, 125, 145, 175, 203, 283, 375, 435, 525, 609, 725, 849, 875, 1015, 1415, 1981, 2175, 2625, 3045, 3625, 4245, 5075, 5943, 7075, 8207, 9905, 10875, 15225, 21225, 24621, 25375, 29715, 35375, 41035, 49525, 57449, 76125, 106125, 123105, 148575, 172347, 205175, 247625, 287245, 615525, 742875, 861735, 1025875, 1436225, 3077625, 4308675, 7181125, 21543375]

約数ペア:

[(1, 21543375), (3, 7181125), (5, 4308675), (7, 3077625), (15, 1436225), (21, 1025875), (25, 861735), (29, 742875), (35, 615525), (75, 287245), (87, 247625), (105, 205175), (125, 172347), (145, 148575), (175, 123105), (203, 106125), (283, 76125), (375, 57449), (435, 49525), (525, 41035), (609, 35375), (725, 29715), (849, 25375), (875, 24621), (1015, 21225), (1415, 15225), (1981, 10875), (2175, 9905), (2625, 8207), (3045, 7075), (3625, 5943), (4245, 5075)]