21692307

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{439}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 35875840

約数和(自身を除く): 14183533

約数列:

[1, 3, 7, 13, 21, 39, 91, 181, 273, 439, 543, 1267, 1317, 2353, 3073, 3801, 5707, 7059, 9219, 16471, 17121, 39949, 49413, 79459, 119847, 238377, 556213, 1032967, 1668639, 3098901, 7230769, 21692307]

約数ペア:

[(1, 21692307), (3, 7230769), (7, 3098901), (13, 1668639), (21, 1032967), (39, 556213), (91, 238377), (181, 119847), (273, 79459), (439, 49413), (543, 39949), (1267, 17121), (1317, 16471), (2353, 9219), (3073, 7059), (3801, 5707)]