19818680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1913}}^1$

素因数の和:1968

約数の個数: 64

約数和(自身を含む): 52367040

約数和(自身を除く): 32548360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 1913, 2072, 2590, 3826, 5180, 7652, 9565, 10360, 13391, 15304, 19130, 26782, 38260, 53564, 66955, 70781, 76520, 107128, 133910, 141562, 267820, 283124, 353905, 495467, 535640, 566248, 707810, 990934, 1415620, 1981868, 2477335, 2831240, 3963736, 4954670, 9909340, 19818680]

約数ペア:

[(1, 19818680), (2, 9909340), (4, 4954670), (5, 3963736), (7, 2831240), (8, 2477335), (10, 1981868), (14, 1415620), (20, 990934), (28, 707810), (35, 566248), (37, 535640), (40, 495467), (56, 353905), (70, 283124), (74, 267820), (140, 141562), (148, 133910), (185, 107128), (259, 76520), (280, 70781), (296, 66955), (370, 53564), (518, 38260), (740, 26782), (1036, 19130), (1295, 15304), (1480, 13391), (1913, 10360), (2072, 9565), (2590, 7652), (3826, 5180)]