391771520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{557}}^1$

素因数の和:740

約数の個数: 128

約数和(自身を含む): 1079127360

約数和(自身を除く): 687355840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 157, 160, 224, 280, 314, 320, 448, 557, 560, 628, 640, 785, 896, 1099, 1114, 1120, 1256, 1570, 2198, 2228, 2240, 2512, 2785, 3140, 3899, 4396, 4456, 4480, 5024, 5495, 5570, 6280, 7798, 8792, 8912, 10048, 10990, 11140, 12560, 15596, 17584, 17824, 19495, 20096, 21980, 22280, 25120, 31192, 35168, 35648, 38990, 43960, 44560, 50240, 62384, 70336, 71296, 77980, 87449, 87920, 89120, 100480, 124768, 140672, 155960, 174898, 175840, 178240, 249536, 311920, 349796, 351680, 356480, 437245, 499072, 612143, 623840, 699592, 703360, 874490, 1224286, 1247680, 1399184, 1748980, 2448572, 2495360, 2798368, 3060715, 3497960, 4897144, 5596736, 6121430, 6995920, 9794288, 11193472, 12242860, 13991840, 19588576, 24485720, 27983680, 39177152, 48971440, 55967360, 78354304, 97942880, 195885760, 391771520]

約数ペア:

[(1, 391771520), (2, 195885760), (4, 97942880), (5, 78354304), (7, 55967360), (8, 48971440), (10, 39177152), (14, 27983680), (16, 24485720), (20, 19588576), (28, 13991840), (32, 12242860), (35, 11193472), (40, 9794288), (56, 6995920), (64, 6121430), (70, 5596736), (80, 4897144), (112, 3497960), (128, 3060715), (140, 2798368), (157, 2495360), (160, 2448572), (224, 1748980), (280, 1399184), (314, 1247680), (320, 1224286), (448, 874490), (557, 703360), (560, 699592), (628, 623840), (640, 612143), (785, 499072), (896, 437245), (1099, 356480), (1114, 351680), (1120, 349796), (1256, 311920), (1570, 249536), (2198, 178240), (2228, 175840), (2240, 174898), (2512, 155960), (2785, 140672), (3140, 124768), (3899, 100480), (4396, 89120), (4456, 87920), (4480, 87449), (5024, 77980), (5495, 71296), (5570, 70336), (6280, 62384), (7798, 50240), (8792, 44560), (8912, 43960), (10048, 38990), (10990, 35648), (11140, 35168), (12560, 31192), (15596, 25120), (17584, 22280), (17824, 21980), (19495, 20096)]