19937080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{709}}^1$

素因数の和:776

約数の個数: 64

約数和(自身を含む): 48564000

約数和(自身を除く): 28626920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 74, 76, 95, 148, 152, 185, 190, 296, 370, 380, 703, 709, 740, 760, 1406, 1418, 1480, 2812, 2836, 3515, 3545, 5624, 5672, 7030, 7090, 13471, 14060, 14180, 26233, 26942, 28120, 28360, 52466, 53884, 67355, 104932, 107768, 131165, 134710, 209864, 262330, 269420, 498427, 524660, 538840, 996854, 1049320, 1993708, 2492135, 3987416, 4984270, 9968540, 19937080]

約数ペア:

[(1, 19937080), (2, 9968540), (4, 4984270), (5, 3987416), (8, 2492135), (10, 1993708), (19, 1049320), (20, 996854), (37, 538840), (38, 524660), (40, 498427), (74, 269420), (76, 262330), (95, 209864), (148, 134710), (152, 131165), (185, 107768), (190, 104932), (296, 67355), (370, 53884), (380, 52466), (703, 28360), (709, 28120), (740, 26942), (760, 26233), (1406, 14180), (1418, 14060), (1480, 13471), (2812, 7090), (2836, 7030), (3515, 5672), (3545, 5624)]