20958720

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2729}}^1$

素因数の和:2755

約数の個数: 80

約数和(自身を含む): 67026960

約数和(自身を除く): 46068240

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, 2729, 3840, 5458, 7680, 8187, 10916, 13645, 16374, 21832, 27290, 32748, 40935, 43664, 54580, 65496, 81870, 87328, 109160, 130992, 163740, 174656, 218320, 261984, 327480, 349312, 436640, 523968, 654960, 698624, 873280, 1047936, 1309920, 1397248, 1746560, 2095872, 2619840, 3493120, 4191744, 5239680, 6986240, 10479360, 20958720]

約数ペア:

[(1, 20958720), (2, 10479360), (3, 6986240), (4, 5239680), (5, 4191744), (6, 3493120), (8, 2619840), (10, 2095872), (12, 1746560), (15, 1397248), (16, 1309920), (20, 1047936), (24, 873280), (30, 698624), (32, 654960), (40, 523968), (48, 436640), (60, 349312), (64, 327480), (80, 261984), (96, 218320), (120, 174656), (128, 163740), (160, 130992), (192, 109160), (240, 87328), (256, 81870), (320, 65496), (384, 54580), (480, 43664), (512, 40935), (640, 32748), (768, 27290), (960, 21832), (1280, 16374), (1536, 13645), (1920, 10916), (2560, 8187), (2729, 7680), (3840, 5458)]