20670720

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{769}}^1$

素因数の和:800

約数の個数: 144

約数和(自身を含む): 75546240

約数和(自身を除く): 54875520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 768, 769, 840, 896, 960, 1120, 1280, 1344, 1538, 1680, 1792, 1920, 2240, 2307, 2688, 3076, 3360, 3840, 3845, 4480, 4614, 5376, 5383, 6152, 6720, 7690, 8960, 9228, 10766, 11535, 12304, 13440, 15380, 16149, 18456, 21532, 23070, 24608, 26880, 26915, 30760, 32298, 36912, 43064, 46140, 49216, 53830, 61520, 64596, 73824, 80745, 86128, 92280, 98432, 107660, 123040, 129192, 147648, 161490, 172256, 184560, 196864, 215320, 246080, 258384, 295296, 322980, 344512, 369120, 430640, 492160, 516768, 590592, 645960, 689024, 738240, 861280, 984320, 1033536, 1291920, 1378048, 1476480, 1722560, 2067072, 2583840, 2952960, 3445120, 4134144, 5167680, 6890240, 10335360, 20670720]

約数ペア:

[(1, 20670720), (2, 10335360), (3, 6890240), (4, 5167680), (5, 4134144), (6, 3445120), (7, 2952960), (8, 2583840), (10, 2067072), (12, 1722560), (14, 1476480), (15, 1378048), (16, 1291920), (20, 1033536), (21, 984320), (24, 861280), (28, 738240), (30, 689024), (32, 645960), (35, 590592), (40, 516768), (42, 492160), (48, 430640), (56, 369120), (60, 344512), (64, 322980), (70, 295296), (80, 258384), (84, 246080), (96, 215320), (105, 196864), (112, 184560), (120, 172256), (128, 161490), (140, 147648), (160, 129192), (168, 123040), (192, 107660), (210, 98432), (224, 92280), (240, 86128), (256, 80745), (280, 73824), (320, 64596), (336, 61520), (384, 53830), (420, 49216), (448, 46140), (480, 43064), (560, 36912), (640, 32298), (672, 30760), (768, 26915), (769, 26880), (840, 24608), (896, 23070), (960, 21532), (1120, 18456), (1280, 16149), (1344, 15380), (1538, 13440), (1680, 12304), (1792, 11535), (1920, 10766), (2240, 9228), (2307, 8960), (2688, 7690), (3076, 6720), (3360, 6152), (3840, 5383), (3845, 5376), (4480, 4614)]