19991520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13883}}^1$

素因数の和:13904

約数の個数: 72

約数和(自身を含む): 68225976

約数和(自身を除く): 48234456

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 13883, 27766, 41649, 55532, 69415, 83298, 111064, 124947, 138830, 166596, 208245, 222128, 249894, 277660, 333192, 416490, 444256, 499788, 555320, 624735, 666384, 832980, 999576, 1110640, 1249470, 1332768, 1665960, 1999152, 2221280, 2498940, 3331920, 3998304, 4997880, 6663840, 9995760, 19991520]

約数ペア:

[(1, 19991520), (2, 9995760), (3, 6663840), (4, 4997880), (5, 3998304), (6, 3331920), (8, 2498940), (9, 2221280), (10, 1999152), (12, 1665960), (15, 1332768), (16, 1249470), (18, 1110640), (20, 999576), (24, 832980), (30, 666384), (32, 624735), (36, 555320), (40, 499788), (45, 444256), (48, 416490), (60, 333192), (72, 277660), (80, 249894), (90, 222128), (96, 208245), (120, 166596), (144, 138830), (160, 124947), (180, 111064), (240, 83298), (288, 69415), (360, 55532), (480, 41649), (720, 27766), (1440, 13883)]