21414340

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{7703}}^1$

素因数の和:7851

約数の個数: 24

約数和(自身を含む): 45299520

約数和(自身を除く): 23885180

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 7703, 15406, 30812, 38515, 77030, 154060, 1070717, 2141434, 4282868, 5353585, 10707170, 21414340]

約数ペア:

[(1, 21414340), (2, 10707170), (4, 5353585), (5, 4282868), (10, 2141434), (20, 1070717), (139, 154060), (278, 77030), (556, 38515), (695, 30812), (1390, 15406), (2780, 7703)]