20720754

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1409}}^1$

素因数の和:1479

約数の個数: 48

約数和(自身を含む): 48391200

約数和(自身を除く): 27670446

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 43, 57, 86, 114, 129, 171, 258, 342, 387, 774, 817, 1409, 1634, 2451, 2818, 4227, 4902, 7353, 8454, 12681, 14706, 25362, 26771, 53542, 60587, 80313, 121174, 160626, 181761, 240939, 363522, 481878, 545283, 1090566, 1151153, 2302306, 3453459, 6906918, 10360377, 20720754]

約数ペア:

[(1, 20720754), (2, 10360377), (3, 6906918), (6, 3453459), (9, 2302306), (18, 1151153), (19, 1090566), (38, 545283), (43, 481878), (57, 363522), (86, 240939), (114, 181761), (129, 160626), (171, 121174), (258, 80313), (342, 60587), (387, 53542), (774, 26771), (817, 25362), (1409, 14706), (1634, 12681), (2451, 8454), (2818, 7353), (4227, 4902)]