21396480

素因数分解:

$2^{10}\times 3^1\times 5^1\times 7^1\times {\mathrm{199}}^1$

素因数の和:234

約数の個数: 176

約数和(自身を含む): 78604800

約数和(自身を除く): 57208320

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, 199, 210, 224, 240, 256, 280, 320, 336, 384, 398, 420, 448, 480, 512, 560, 597, 640, 672, 768, 796, 840, 896, 960, 995, 1024, 1120, 1194, 1280, 1344, 1393, 1536, 1592, 1680, 1792, 1920, 1990, 2240, 2388, 2560, 2688, 2786, 2985, 3072, 3184, 3360, 3584, 3840, 3980, 4179, 4480, 4776, 5120, 5376, 5572, 5970, 6368, 6720, 6965, 7168, 7680, 7960, 8358, 8960, 9552, 10752, 11144, 11940, 12736, 13440, 13930, 15360, 15920, 16716, 17920, 19104, 20895, 21504, 22288, 23880, 25472, 26880, 27860, 31840, 33432, 35840, 38208, 41790, 44576, 47760, 50944, 53760, 55720, 63680, 66864, 76416, 83580, 89152, 95520, 101888, 107520, 111440, 127360, 133728, 152832, 167160, 178304, 191040, 203776, 222880, 254720, 267456, 305664, 334320, 356608, 382080, 445760, 509440, 534912, 611328, 668640, 713216, 764160, 891520, 1018880, 1069824, 1337280, 1426432, 1528320, 1783040, 2139648, 2674560, 3056640, 3566080, 4279296, 5349120, 7132160, 10698240, 21396480]

約数ペア:

[(1, 21396480), (2, 10698240), (3, 7132160), (4, 5349120), (5, 4279296), (6, 3566080), (7, 3056640), (8, 2674560), (10, 2139648), (12, 1783040), (14, 1528320), (15, 1426432), (16, 1337280), (20, 1069824), (21, 1018880), (24, 891520), (28, 764160), (30, 713216), (32, 668640), (35, 611328), (40, 534912), (42, 509440), (48, 445760), (56, 382080), (60, 356608), (64, 334320), (70, 305664), (80, 267456), (84, 254720), (96, 222880), (105, 203776), (112, 191040), (120, 178304), (128, 167160), (140, 152832), (160, 133728), (168, 127360), (192, 111440), (199, 107520), (210, 101888), (224, 95520), (240, 89152), (256, 83580), (280, 76416), (320, 66864), (336, 63680), (384, 55720), (398, 53760), (420, 50944), (448, 47760), (480, 44576), (512, 41790), (560, 38208), (597, 35840), (640, 33432), (672, 31840), (768, 27860), (796, 26880), (840, 25472), (896, 23880), (960, 22288), (995, 21504), (1024, 20895), (1120, 19104), (1194, 17920), (1280, 16716), (1344, 15920), (1393, 15360), (1536, 13930), (1592, 13440), (1680, 12736), (1792, 11940), (1920, 11144), (1990, 10752), (2240, 9552), (2388, 8960), (2560, 8358), (2688, 7960), (2786, 7680), (2985, 7168), (3072, 6965), (3184, 6720), (3360, 6368), (3584, 5970), (3840, 5572), (3980, 5376), (4179, 5120), (4480, 4776)]