21246005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{733}}^1$

素因数の和:797

約数の個数: 32

約数和(自身を含む): 30440448

約数和(自身を除く): 9194443

約数列:

[1, 5, 11, 17, 31, 55, 85, 155, 187, 341, 527, 733, 935, 1705, 2635, 3665, 5797, 8063, 12461, 22723, 28985, 40315, 62305, 113615, 137071, 249953, 386291, 685355, 1249765, 1931455, 4249201, 21246005]

約数ペア:

[(1, 21246005), (5, 4249201), (11, 1931455), (17, 1249765), (31, 685355), (55, 386291), (85, 249953), (155, 137071), (187, 113615), (341, 62305), (527, 40315), (733, 28985), (935, 22723), (1705, 12461), (2635, 8063), (3665, 5797)]