21780480

素因数分解:

$2^{11}\times 3^1\times 5^1\times {\mathrm{709}}^1$

素因数の和:739

約数の個数: 96

約数和(自身を含む): 69778800

約数和(自身を除く): 47998320

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, 709, 768, 960, 1024, 1280, 1418, 1536, 1920, 2048, 2127, 2560, 2836, 3072, 3545, 3840, 4254, 5120, 5672, 6144, 7090, 7680, 8508, 10240, 10635, 11344, 14180, 15360, 17016, 21270, 22688, 28360, 30720, 34032, 42540, 45376, 56720, 68064, 85080, 90752, 113440, 136128, 170160, 181504, 226880, 272256, 340320, 363008, 453760, 544512, 680640, 726016, 907520, 1089024, 1361280, 1452032, 1815040, 2178048, 2722560, 3630080, 4356096, 5445120, 7260160, 10890240, 21780480]

約数ペア:

[(1, 21780480), (2, 10890240), (3, 7260160), (4, 5445120), (5, 4356096), (6, 3630080), (8, 2722560), (10, 2178048), (12, 1815040), (15, 1452032), (16, 1361280), (20, 1089024), (24, 907520), (30, 726016), (32, 680640), (40, 544512), (48, 453760), (60, 363008), (64, 340320), (80, 272256), (96, 226880), (120, 181504), (128, 170160), (160, 136128), (192, 113440), (240, 90752), (256, 85080), (320, 68064), (384, 56720), (480, 45376), (512, 42540), (640, 34032), (709, 30720), (768, 28360), (960, 22688), (1024, 21270), (1280, 17016), (1418, 15360), (1536, 14180), (1920, 11344), (2048, 10635), (2127, 10240), (2560, 8508), (2836, 7680), (3072, 7090), (3545, 6144), (3840, 5672), (4254, 5120)]