20144120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 47355840

約数和(自身を除く): 27211720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 71, 82, 142, 164, 173, 205, 284, 328, 346, 355, 410, 568, 692, 710, 820, 865, 1384, 1420, 1640, 1730, 2840, 2911, 3460, 5822, 6920, 7093, 11644, 12283, 14186, 14555, 23288, 24566, 28372, 29110, 35465, 49132, 56744, 58220, 61415, 70930, 98264, 116440, 122830, 141860, 245660, 283720, 491320, 503603, 1007206, 2014412, 2518015, 4028824, 5036030, 10072060, 20144120]

約数ペア:

[(1, 20144120), (2, 10072060), (4, 5036030), (5, 4028824), (8, 2518015), (10, 2014412), (20, 1007206), (40, 503603), (41, 491320), (71, 283720), (82, 245660), (142, 141860), (164, 122830), (173, 116440), (205, 98264), (284, 70930), (328, 61415), (346, 58220), (355, 56744), (410, 49132), (568, 35465), (692, 29110), (710, 28372), (820, 24566), (865, 23288), (1384, 14555), (1420, 14186), (1640, 12283), (1730, 11644), (2840, 7093), (2911, 6920), (3460, 5822)]