21338954

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{311}}^1$

素因数の和:375

約数の個数: 48

約数和(自身を含む): 41109120

約数和(自身を除く): 19770166

約数列:

[1, 2, 7, 13, 14, 26, 29, 58, 91, 169, 182, 203, 311, 338, 377, 406, 622, 754, 1183, 2177, 2366, 2639, 4043, 4354, 4901, 5278, 8086, 9019, 9802, 18038, 28301, 34307, 52559, 56602, 63133, 68614, 105118, 117247, 126266, 234494, 367913, 735826, 820729, 1524211, 1641458, 3048422, 10669477, 21338954]

約数ペア:

[(1, 21338954), (2, 10669477), (7, 3048422), (13, 1641458), (14, 1524211), (26, 820729), (29, 735826), (58, 367913), (91, 234494), (169, 126266), (182, 117247), (203, 105118), (311, 68614), (338, 63133), (377, 56602), (406, 52559), (622, 34307), (754, 28301), (1183, 18038), (2177, 9802), (2366, 9019), (2639, 8086), (4043, 5278), (4354, 4901)]