21338716

素因数分解:

$2^2\times 7^3\times {\mathrm{103}}^1\times {\mathrm{151}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 44262400

約数和(自身を除く): 22923684

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 103, 151, 196, 206, 302, 343, 412, 604, 686, 721, 1057, 1372, 1442, 2114, 2884, 4228, 5047, 7399, 10094, 14798, 15553, 20188, 29596, 31106, 35329, 51793, 62212, 70658, 103586, 108871, 141316, 207172, 217742, 435484, 762097, 1524194, 3048388, 5334679, 10669358, 21338716]

約数ペア:

[(1, 21338716), (2, 10669358), (4, 5334679), (7, 3048388), (14, 1524194), (28, 762097), (49, 435484), (98, 217742), (103, 207172), (151, 141316), (196, 108871), (206, 103586), (302, 70658), (343, 62212), (412, 51793), (604, 35329), (686, 31106), (721, 29596), (1057, 20188), (1372, 15553), (1442, 14798), (2114, 10094), (2884, 7399), (4228, 5047)]