258601917

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{241}}^1\times {\mathrm{1381}}^1$

素因数の和:1669

約数の個数: 32

約数和(自身を含む): 406683904

約数和(自身を除く): 148081987

約数列:

[1, 3, 7, 21, 37, 111, 241, 259, 723, 777, 1381, 1687, 4143, 5061, 8917, 9667, 26751, 29001, 51097, 62419, 153291, 187257, 332821, 357679, 998463, 1073037, 2329747, 6989241, 12314377, 36943131, 86200639, 258601917]

約数ペア:

[(1, 258601917), (3, 86200639), (7, 36943131), (21, 12314377), (37, 6989241), (111, 2329747), (241, 1073037), (259, 998463), (723, 357679), (777, 332821), (1381, 187257), (1687, 153291), (4143, 62419), (5061, 51097), (8917, 29001), (9667, 26751)]