20296960

素因数分解:

$2^8\times 5^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 49411656

約数和(自身を除く): 29114696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 128, 157, 160, 202, 256, 314, 320, 404, 505, 628, 640, 785, 808, 1010, 1256, 1280, 1570, 1616, 2020, 2512, 3140, 3232, 4040, 5024, 6280, 6464, 8080, 10048, 12560, 12928, 15857, 16160, 20096, 25120, 25856, 31714, 32320, 40192, 50240, 63428, 64640, 79285, 100480, 126856, 129280, 158570, 200960, 253712, 317140, 507424, 634280, 1014848, 1268560, 2029696, 2537120, 4059392, 5074240, 10148480, 20296960]

約数ペア:

[(1, 20296960), (2, 10148480), (4, 5074240), (5, 4059392), (8, 2537120), (10, 2029696), (16, 1268560), (20, 1014848), (32, 634280), (40, 507424), (64, 317140), (80, 253712), (101, 200960), (128, 158570), (157, 129280), (160, 126856), (202, 100480), (256, 79285), (314, 64640), (320, 63428), (404, 50240), (505, 40192), (628, 32320), (640, 31714), (785, 25856), (808, 25120), (1010, 20096), (1256, 16160), (1280, 15857), (1570, 12928), (1616, 12560), (2020, 10048), (2512, 8080), (3140, 6464), (3232, 6280), (4040, 5024)]