28959021

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1861}}^1$

素因数の和:1906

約数の個数: 48

約数和(自身を含む): 54221440

約数和(自身を除く): 25262419

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 57, 63, 91, 117, 133, 171, 247, 273, 399, 741, 819, 1197, 1729, 1861, 2223, 5187, 5583, 13027, 15561, 16749, 24193, 35359, 39081, 72579, 106077, 117243, 169351, 217737, 247513, 318231, 459667, 508053, 742539, 1379001, 1524159, 2227617, 3217669, 4137003, 9653007, 28959021]

約数ペア:

[(1, 28959021), (3, 9653007), (7, 4137003), (9, 3217669), (13, 2227617), (19, 1524159), (21, 1379001), (39, 742539), (57, 508053), (63, 459667), (91, 318231), (117, 247513), (133, 217737), (171, 169351), (247, 117243), (273, 106077), (399, 72579), (741, 39081), (819, 35359), (1197, 24193), (1729, 16749), (1861, 15561), (2223, 13027), (5187, 5583)]