28215040

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:142

約数の個数: 144

約数和(自身を含む): 80059392

約数和(自身を除く): 51844352

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 56, 64, 67, 70, 80, 94, 112, 128, 134, 140, 160, 188, 224, 235, 256, 268, 280, 320, 329, 335, 376, 448, 469, 470, 536, 560, 640, 658, 670, 752, 896, 938, 940, 1072, 1120, 1280, 1316, 1340, 1504, 1645, 1792, 1876, 1880, 2144, 2240, 2345, 2632, 2680, 3008, 3149, 3290, 3752, 3760, 4288, 4480, 4690, 5264, 5360, 6016, 6298, 6580, 7504, 7520, 8576, 8960, 9380, 10528, 10720, 12032, 12596, 13160, 15008, 15040, 15745, 17152, 18760, 21056, 21440, 22043, 25192, 26320, 30016, 30080, 31490, 37520, 42112, 42880, 44086, 50384, 52640, 60032, 60160, 62980, 75040, 84224, 85760, 88172, 100768, 105280, 110215, 120064, 125960, 150080, 176344, 201536, 210560, 220430, 251920, 300160, 352688, 403072, 421120, 440860, 503840, 600320, 705376, 806144, 881720, 1007680, 1410752, 1763440, 2015360, 2821504, 3526880, 4030720, 5643008, 7053760, 14107520, 28215040]

約数ペア:

[(1, 28215040), (2, 14107520), (4, 7053760), (5, 5643008), (7, 4030720), (8, 3526880), (10, 2821504), (14, 2015360), (16, 1763440), (20, 1410752), (28, 1007680), (32, 881720), (35, 806144), (40, 705376), (47, 600320), (56, 503840), (64, 440860), (67, 421120), (70, 403072), (80, 352688), (94, 300160), (112, 251920), (128, 220430), (134, 210560), (140, 201536), (160, 176344), (188, 150080), (224, 125960), (235, 120064), (256, 110215), (268, 105280), (280, 100768), (320, 88172), (329, 85760), (335, 84224), (376, 75040), (448, 62980), (469, 60160), (470, 60032), (536, 52640), (560, 50384), (640, 44086), (658, 42880), (670, 42112), (752, 37520), (896, 31490), (938, 30080), (940, 30016), (1072, 26320), (1120, 25192), (1280, 22043), (1316, 21440), (1340, 21056), (1504, 18760), (1645, 17152), (1792, 15745), (1876, 15040), (1880, 15008), (2144, 13160), (2240, 12596), (2345, 12032), (2632, 10720), (2680, 10528), (3008, 9380), (3149, 8960), (3290, 8576), (3752, 7520), (3760, 7504), (4288, 6580), (4480, 6298), (4690, 6016), (5264, 5360)]