21120764

素因数分解:

$2^2\times 7^2\times {\mathrm{197}}^1\times {\mathrm{547}}^1$

素因数の和:762

約数の個数: 36

約数和(自身を含む): 43293096

約数和(自身を除く): 22172332

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 197, 394, 547, 788, 1094, 1379, 2188, 2758, 3829, 5516, 7658, 9653, 15316, 19306, 26803, 38612, 53606, 107212, 107759, 215518, 431036, 754313, 1508626, 3017252, 5280191, 10560382, 21120764]

約数ペア:

[(1, 21120764), (2, 10560382), (4, 5280191), (7, 3017252), (14, 1508626), (28, 754313), (49, 431036), (98, 215518), (196, 107759), (197, 107212), (394, 53606), (547, 38612), (788, 26803), (1094, 19306), (1379, 15316), (2188, 9653), (2758, 7658), (3829, 5516)]