81998640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1867}}^1$

素因数の和:1947

約数の個数: 120

約数和(自身を含む): 280043088

約数和(自身を除く): 198044448

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 61, 72, 80, 90, 120, 122, 144, 180, 183, 240, 244, 305, 360, 366, 488, 549, 610, 720, 732, 915, 976, 1098, 1220, 1464, 1830, 1867, 2196, 2440, 2745, 2928, 3660, 3734, 4392, 4880, 5490, 5601, 7320, 7468, 8784, 9335, 10980, 11202, 14640, 14936, 16803, 18670, 21960, 22404, 28005, 29872, 33606, 37340, 43920, 44808, 56010, 67212, 74680, 84015, 89616, 112020, 113887, 134424, 149360, 168030, 224040, 227774, 268848, 336060, 341661, 448080, 455548, 569435, 672120, 683322, 911096, 1024983, 1138870, 1344240, 1366644, 1708305, 1822192, 2049966, 2277740, 2733288, 3416610, 4099932, 4555480, 5124915, 5466576, 6833220, 8199864, 9110960, 10249830, 13666440, 16399728, 20499660, 27332880, 40999320, 81998640]

約数ペア:

[(1, 81998640), (2, 40999320), (3, 27332880), (4, 20499660), (5, 16399728), (6, 13666440), (8, 10249830), (9, 9110960), (10, 8199864), (12, 6833220), (15, 5466576), (16, 5124915), (18, 4555480), (20, 4099932), (24, 3416610), (30, 2733288), (36, 2277740), (40, 2049966), (45, 1822192), (48, 1708305), (60, 1366644), (61, 1344240), (72, 1138870), (80, 1024983), (90, 911096), (120, 683322), (122, 672120), (144, 569435), (180, 455548), (183, 448080), (240, 341661), (244, 336060), (305, 268848), (360, 227774), (366, 224040), (488, 168030), (549, 149360), (610, 134424), (720, 113887), (732, 112020), (915, 89616), (976, 84015), (1098, 74680), (1220, 67212), (1464, 56010), (1830, 44808), (1867, 43920), (2196, 37340), (2440, 33606), (2745, 29872), (2928, 28005), (3660, 22404), (3734, 21960), (4392, 18670), (4880, 16803), (5490, 14936), (5601, 14640), (7320, 11202), (7468, 10980), (8784, 9335)]