278399429

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1321}}^1$

素因数の和:1386

約数の個数: 48

約数和(自身を含む): 390635136

約数和(自身を除く): 112235707

約数列:

[1, 7, 11, 17, 23, 49, 77, 119, 161, 187, 253, 391, 539, 833, 1127, 1309, 1321, 1771, 2737, 4301, 9163, 9247, 12397, 14531, 19159, 22457, 30107, 30383, 64729, 101717, 157199, 210749, 212681, 247027, 334213, 516511, 712019, 1100393, 1488767, 1729189, 2339491, 3615577, 5681621, 12104323, 16376437, 25309039, 39771347, 278399429]

約数ペア:

[(1, 278399429), (7, 39771347), (11, 25309039), (17, 16376437), (23, 12104323), (49, 5681621), (77, 3615577), (119, 2339491), (161, 1729189), (187, 1488767), (253, 1100393), (391, 712019), (539, 516511), (833, 334213), (1127, 247027), (1309, 212681), (1321, 210749), (1771, 157199), (2737, 101717), (4301, 64729), (9163, 30383), (9247, 30107), (12397, 22457), (14531, 19159)]