21958456

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1061}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 44604000

約数和(自身を除く): 22645544

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199, 398, 796, 1061, 1592, 2122, 2587, 4244, 5174, 8488, 10348, 13793, 20696, 27586, 55172, 110344, 211139, 422278, 844556, 1689112, 2744807, 5489614, 10979228, 21958456]

約数ペア:

[(1, 21958456), (2, 10979228), (4, 5489614), (8, 2744807), (13, 1689112), (26, 844556), (52, 422278), (104, 211139), (199, 110344), (398, 55172), (796, 27586), (1061, 20696), (1592, 13793), (2122, 10348), (2587, 8488), (4244, 5174)]