21259532

素因数分解:

$2^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1373}}^1$

素因数の和:1470

約数の個数: 36

約数和(自身を含む): 43858080

約数和(自身を除く): 22598548

約数列:

[1, 2, 4, 7, 14, 28, 49, 79, 98, 158, 196, 316, 553, 1106, 1373, 2212, 2746, 3871, 5492, 7742, 9611, 15484, 19222, 38444, 67277, 108467, 134554, 216934, 269108, 433868, 759269, 1518538, 3037076, 5314883, 10629766, 21259532]

約数ペア:

[(1, 21259532), (2, 10629766), (4, 5314883), (7, 3037076), (14, 1518538), (28, 759269), (49, 433868), (79, 269108), (98, 216934), (158, 134554), (196, 108467), (316, 67277), (553, 38444), (1106, 19222), (1373, 15484), (2212, 9611), (2746, 7742), (3871, 5492)]