21552388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{919}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 45440640

約数和(自身を除く): 23888252

約数列:

[1, 2, 4, 11, 13, 22, 26, 41, 44, 52, 82, 143, 164, 286, 451, 533, 572, 902, 919, 1066, 1804, 1838, 2132, 3676, 5863, 10109, 11726, 11947, 20218, 23452, 23894, 37679, 40436, 47788, 75358, 131417, 150716, 262834, 414469, 489827, 525668, 828938, 979654, 1657876, 1959308, 5388097, 10776194, 21552388]

約数ペア:

[(1, 21552388), (2, 10776194), (4, 5388097), (11, 1959308), (13, 1657876), (22, 979654), (26, 828938), (41, 525668), (44, 489827), (52, 414469), (82, 262834), (143, 150716), (164, 131417), (286, 75358), (451, 47788), (533, 40436), (572, 37679), (902, 23894), (919, 23452), (1066, 20218), (1804, 11947), (1838, 11726), (2132, 10109), (3676, 5863)]