19856187

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 33415200

約数和(自身を除く): 13559013

約数列:

[1, 3, 9, 13, 17, 39, 51, 67, 117, 149, 153, 201, 221, 447, 603, 663, 871, 1139, 1341, 1937, 1989, 2533, 2613, 3417, 5811, 7599, 7839, 9983, 10251, 14807, 17433, 22797, 29949, 32929, 44421, 89847, 98787, 129779, 133263, 169711, 296361, 389337, 509133, 1168011, 1527399, 2206243, 6618729, 19856187]

約数ペア:

[(1, 19856187), (3, 6618729), (9, 2206243), (13, 1527399), (17, 1168011), (39, 509133), (51, 389337), (67, 296361), (117, 169711), (149, 133263), (153, 129779), (201, 98787), (221, 89847), (447, 44421), (603, 32929), (663, 29949), (871, 22797), (1139, 17433), (1341, 14807), (1937, 10251), (1989, 9983), (2533, 7839), (2613, 7599), (3417, 5811)]