21274942

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{15439}}^1$

素因数の和:15507

約数の個数: 16

約数和(自身を含む): 35017920

約数和(自身を除く): 13742978

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 15439, 30878, 200707, 401414, 818267, 1636534, 10637471, 21274942]

約数ペア:

[(1, 21274942), (2, 10637471), (13, 1636534), (26, 818267), (53, 401414), (106, 200707), (689, 30878), (1378, 15439)]