28687295

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{9007}}^1$

素因数の和:9039

約数の個数: 24

約数和(自身を含む): 43130304

約数和(自身を除く): 14443009

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 9007, 45035, 63049, 117091, 315245, 441343, 585455, 819637, 2206715, 4098185, 5737459, 28687295]

約数ペア:

[(1, 28687295), (5, 5737459), (7, 4098185), (13, 2206715), (35, 819637), (49, 585455), (65, 441343), (91, 315245), (245, 117091), (455, 63049), (637, 45035), (3185, 9007)]