201717775

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:189

約数の個数: 72

約数和(自身を含む): 314456064

約数和(自身を除く): 112738289

約数列:

[1, 5, 7, 19, 25, 31, 35, 95, 103, 133, 155, 175, 217, 361, 475, 515, 589, 665, 721, 775, 1085, 1805, 1957, 2527, 2575, 2945, 3193, 3325, 3605, 4123, 5425, 9025, 9785, 11191, 12635, 13699, 14725, 15965, 18025, 20615, 22351, 37183, 48925, 55955, 60667, 63175, 68495, 78337, 79825, 103075, 111755, 185915, 260281, 279775, 303335, 342475, 391685, 424669, 558775, 929575, 1152673, 1301405, 1516675, 1958425, 2123345, 5763365, 6507025, 8068711, 10616725, 28816825, 40343555, 201717775]

約数ペア:

[(1, 201717775), (5, 40343555), (7, 28816825), (19, 10616725), (25, 8068711), (31, 6507025), (35, 5763365), (95, 2123345), (103, 1958425), (133, 1516675), (155, 1301405), (175, 1152673), (217, 929575), (361, 558775), (475, 424669), (515, 391685), (589, 342475), (665, 303335), (721, 279775), (775, 260281), (1085, 185915), (1805, 111755), (1957, 103075), (2527, 79825), (2575, 78337), (2945, 68495), (3193, 63175), (3325, 60667), (3605, 55955), (4123, 48925), (5425, 37183), (9025, 22351), (9785, 20615), (11191, 18025), (12635, 15965), (13699, 14725)]