20605440

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2683}}^1$

素因数の和:2709

約数の個数: 80

約数和(自身を含む): 65897568

約数和(自身を除く): 45292128

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 2683, 3840, 5366, 7680, 8049, 10732, 13415, 16098, 21464, 26830, 32196, 40245, 42928, 53660, 64392, 80490, 85856, 107320, 128784, 160980, 171712, 214640, 257568, 321960, 343424, 429280, 515136, 643920, 686848, 858560, 1030272, 1287840, 1373696, 1717120, 2060544, 2575680, 3434240, 4121088, 5151360, 6868480, 10302720, 20605440]

約数ペア:

[(1, 20605440), (2, 10302720), (3, 6868480), (4, 5151360), (5, 4121088), (6, 3434240), (8, 2575680), (10, 2060544), (12, 1717120), (15, 1373696), (16, 1287840), (20, 1030272), (24, 858560), (30, 686848), (32, 643920), (40, 515136), (48, 429280), (60, 343424), (64, 321960), (80, 257568), (96, 214640), (120, 171712), (128, 160980), (160, 128784), (192, 107320), (240, 85856), (256, 80490), (320, 64392), (384, 53660), (480, 42928), (512, 40245), (640, 32196), (768, 26830), (960, 21464), (1280, 16098), (1536, 13415), (1920, 10732), (2560, 8049), (2683, 7680), (3840, 5366)]