19893978

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1667}}^1$

素因数の和:1708

約数の個数: 64

約数和(自身を含む): 50440320

約数和(自身を除く): 30546342

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 27, 34, 39, 51, 54, 78, 102, 117, 153, 221, 234, 306, 351, 442, 459, 663, 702, 918, 1326, 1667, 1989, 3334, 3978, 5001, 5967, 10002, 11934, 15003, 21671, 28339, 30006, 43342, 45009, 56678, 65013, 85017, 90018, 130026, 170034, 195039, 255051, 368407, 390078, 510102, 585117, 736814, 765153, 1105221, 1170234, 1530306, 2210442, 3315663, 6631326, 9946989, 19893978]

約数ペア:

[(1, 19893978), (2, 9946989), (3, 6631326), (6, 3315663), (9, 2210442), (13, 1530306), (17, 1170234), (18, 1105221), (26, 765153), (27, 736814), (34, 585117), (39, 510102), (51, 390078), (54, 368407), (78, 255051), (102, 195039), (117, 170034), (153, 130026), (221, 90018), (234, 85017), (306, 65013), (351, 56678), (442, 45009), (459, 43342), (663, 30006), (702, 28339), (918, 21671), (1326, 15003), (1667, 11934), (1989, 10002), (3334, 5967), (3978, 5001)]