209215515

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{6263}}^1$

素因数の和:6419

約数の個数: 32

約数和(自身を含む): 357198336

約数和(自身を除く): 147982821

約数列:

[1, 3, 5, 15, 17, 51, 85, 131, 255, 393, 655, 1965, 2227, 6263, 6681, 11135, 18789, 31315, 33405, 93945, 106471, 319413, 532355, 820453, 1597065, 2461359, 4102265, 12306795, 13947701, 41843103, 69738505, 209215515]

約数ペア:

[(1, 209215515), (3, 69738505), (5, 41843103), (15, 13947701), (17, 12306795), (51, 4102265), (85, 2461359), (131, 1597065), (255, 820453), (393, 532355), (655, 319413), (1965, 106471), (2227, 93945), (6263, 33405), (6681, 31315), (11135, 18789)]