21054572

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{347}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 46303488

約数和(自身を除く): 25248916

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 197, 308, 347, 394, 694, 788, 1379, 1388, 2167, 2429, 2758, 3817, 4334, 4858, 5516, 7634, 8668, 9716, 15169, 15268, 26719, 30338, 53438, 60676, 68359, 106876, 136718, 273436, 478513, 751949, 957026, 1503898, 1914052, 3007796, 5263643, 10527286, 21054572]

約数ペア:

[(1, 21054572), (2, 10527286), (4, 5263643), (7, 3007796), (11, 1914052), (14, 1503898), (22, 957026), (28, 751949), (44, 478513), (77, 273436), (154, 136718), (197, 106876), (308, 68359), (347, 60676), (394, 53438), (694, 30338), (788, 26719), (1379, 15268), (1388, 15169), (2167, 9716), (2429, 8668), (2758, 7634), (3817, 5516), (4334, 4858)]