278045320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1$

素因数の和:375

約数の個数: 128

約数和(自身を含む): 739952640

約数和(自身を除く): 461907320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 73, 122, 140, 146, 223, 244, 280, 292, 305, 365, 427, 446, 488, 511, 584, 610, 730, 854, 892, 1022, 1115, 1220, 1460, 1561, 1708, 1784, 2044, 2135, 2230, 2440, 2555, 2920, 3122, 3416, 4088, 4270, 4453, 4460, 5110, 6244, 7805, 8540, 8906, 8920, 10220, 12488, 13603, 15610, 16279, 17080, 17812, 20440, 22265, 27206, 31171, 31220, 32558, 35624, 44530, 54412, 62342, 62440, 65116, 68015, 81395, 89060, 95221, 108824, 113953, 124684, 130232, 136030, 155855, 162790, 178120, 190442, 227906, 249368, 272060, 311710, 325580, 380884, 455812, 476105, 544120, 569765, 623420, 651160, 761768, 911624, 952210, 993019, 1139530, 1246840, 1904420, 1986038, 2279060, 3808840, 3972076, 4558120, 4965095, 6951133, 7944152, 9930190, 13902266, 19860380, 27804532, 34755665, 39720760, 55609064, 69511330, 139022660, 278045320]

約数ペア:

[(1, 278045320), (2, 139022660), (4, 69511330), (5, 55609064), (7, 39720760), (8, 34755665), (10, 27804532), (14, 19860380), (20, 13902266), (28, 9930190), (35, 7944152), (40, 6951133), (56, 4965095), (61, 4558120), (70, 3972076), (73, 3808840), (122, 2279060), (140, 1986038), (146, 1904420), (223, 1246840), (244, 1139530), (280, 993019), (292, 952210), (305, 911624), (365, 761768), (427, 651160), (446, 623420), (488, 569765), (511, 544120), (584, 476105), (610, 455812), (730, 380884), (854, 325580), (892, 311710), (1022, 272060), (1115, 249368), (1220, 227906), (1460, 190442), (1561, 178120), (1708, 162790), (1784, 155855), (2044, 136030), (2135, 130232), (2230, 124684), (2440, 113953), (2555, 108824), (2920, 95221), (3122, 89060), (3416, 81395), (4088, 68015), (4270, 65116), (4453, 62440), (4460, 62342), (5110, 54412), (6244, 44530), (7805, 35624), (8540, 32558), (8906, 31220), (8920, 31171), (10220, 27206), (12488, 22265), (13603, 20440), (15610, 17812), (16279, 17080)]