205121970

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3469}}^1$

素因数の和:3561

約数の個数: 80

約数和(自身を含む): 559266840

約数和(自身を除く): 354144870

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 73, 81, 90, 135, 146, 162, 219, 270, 365, 405, 438, 657, 730, 810, 1095, 1314, 1971, 2190, 3285, 3469, 3942, 5913, 6570, 6938, 9855, 10407, 11826, 17345, 19710, 20814, 29565, 31221, 34690, 52035, 59130, 62442, 93663, 104070, 156105, 187326, 253237, 280989, 312210, 468315, 506474, 561978, 759711, 936630, 1266185, 1404945, 1519422, 2279133, 2532370, 2809890, 3798555, 4558266, 6837399, 7597110, 11395665, 13674798, 20512197, 22791330, 34186995, 41024394, 68373990, 102560985, 205121970]

約数ペア:

[(1, 205121970), (2, 102560985), (3, 68373990), (5, 41024394), (6, 34186995), (9, 22791330), (10, 20512197), (15, 13674798), (18, 11395665), (27, 7597110), (30, 6837399), (45, 4558266), (54, 3798555), (73, 2809890), (81, 2532370), (90, 2279133), (135, 1519422), (146, 1404945), (162, 1266185), (219, 936630), (270, 759711), (365, 561978), (405, 506474), (438, 468315), (657, 312210), (730, 280989), (810, 253237), (1095, 187326), (1314, 156105), (1971, 104070), (2190, 93663), (3285, 62442), (3469, 59130), (3942, 52035), (5913, 34690), (6570, 31221), (6938, 29565), (9855, 20814), (10407, 19710), (11826, 17345)]