21180152

素因数分解:

$2^3\times 7^2\times {\mathrm{71}}^1\times {\mathrm{761}}^1$

素因数の和:852

約数の個数: 48

約数和(自身を含む): 46908720

約数和(自身を除く): 25728568

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 71, 98, 142, 196, 284, 392, 497, 568, 761, 994, 1522, 1988, 3044, 3479, 3976, 5327, 6088, 6958, 10654, 13916, 21308, 27832, 37289, 42616, 54031, 74578, 108062, 149156, 216124, 298312, 378217, 432248, 756434, 1512868, 2647519, 3025736, 5295038, 10590076, 21180152]

約数ペア:

[(1, 21180152), (2, 10590076), (4, 5295038), (7, 3025736), (8, 2647519), (14, 1512868), (28, 756434), (49, 432248), (56, 378217), (71, 298312), (98, 216124), (142, 149156), (196, 108062), (284, 74578), (392, 54031), (497, 42616), (568, 37289), (761, 27832), (994, 21308), (1522, 13916), (1988, 10654), (3044, 6958), (3479, 6088), (3976, 5327)]