20903418

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:403

約数の個数: 48

約数和(自身を含む): 46949760

約数和(自身を除く): 26046342

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 113, 129, 226, 239, 258, 339, 387, 478, 678, 717, 774, 1017, 1434, 2034, 2151, 4302, 4859, 9718, 10277, 14577, 20554, 27007, 29154, 30831, 43731, 54014, 61662, 81021, 87462, 92493, 162042, 184986, 243063, 486126, 1161301, 2322602, 3483903, 6967806, 10451709, 20903418]

約数ペア:

[(1, 20903418), (2, 10451709), (3, 6967806), (6, 3483903), (9, 2322602), (18, 1161301), (43, 486126), (86, 243063), (113, 184986), (129, 162042), (226, 92493), (239, 87462), (258, 81021), (339, 61662), (387, 54014), (478, 43731), (678, 30831), (717, 29154), (774, 27007), (1017, 20554), (1434, 14577), (2034, 10277), (2151, 9718), (4302, 4859)]