21304612

素因数分解:

$2^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{1489}}^1$

素因数の和:1580

約数の個数: 36

約数和(自身を含む): 43993740

約数和(自身を除く): 22689128

約数列:

[1, 2, 4, 7, 14, 28, 49, 73, 98, 146, 196, 292, 511, 1022, 1489, 2044, 2978, 3577, 5956, 7154, 10423, 14308, 20846, 41692, 72961, 108697, 145922, 217394, 291844, 434788, 760879, 1521758, 3043516, 5326153, 10652306, 21304612]

約数ペア:

[(1, 21304612), (2, 10652306), (4, 5326153), (7, 3043516), (14, 1521758), (28, 760879), (49, 434788), (73, 291844), (98, 217394), (146, 145922), (196, 108697), (292, 72961), (511, 41692), (1022, 20846), (1489, 14308), (2044, 10423), (2978, 7154), (3577, 5956)]