209739621

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{7459}}^1$

素因数の和:7585

約数の個数: 32

約数和(自身を含む): 347576320

約数和(自身を除く): 137836699

約数列:

[1, 3, 7, 13, 21, 39, 91, 103, 273, 309, 721, 1339, 2163, 4017, 7459, 9373, 22377, 28119, 52213, 96967, 156639, 290901, 678769, 768277, 2036307, 2304831, 5377939, 9987601, 16133817, 29962803, 69913207, 209739621]

約数ペア:

[(1, 209739621), (3, 69913207), (7, 29962803), (13, 16133817), (21, 9987601), (39, 5377939), (91, 2304831), (103, 2036307), (273, 768277), (309, 678769), (721, 290901), (1339, 156639), (2163, 96967), (4017, 52213), (7459, 28119), (9373, 22377)]