20779275

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 38033280

約数和(自身を除く): 17254005

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 89, 165, 267, 275, 283, 445, 825, 849, 979, 1335, 1415, 2225, 2937, 3113, 4245, 4895, 6675, 7075, 9339, 14685, 15565, 21225, 24475, 25187, 46695, 73425, 75561, 77825, 125935, 233475, 277057, 377805, 629675, 831171, 1385285, 1889025, 4155855, 6926425, 20779275]

約数ペア:

[(1, 20779275), (3, 6926425), (5, 4155855), (11, 1889025), (15, 1385285), (25, 831171), (33, 629675), (55, 377805), (75, 277057), (89, 233475), (165, 125935), (267, 77825), (275, 75561), (283, 73425), (445, 46695), (825, 25187), (849, 24475), (979, 21225), (1335, 15565), (1415, 14685), (2225, 9339), (2937, 7075), (3113, 6675), (4245, 4895)]