20121294080

素因数分解:

$2^8\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{5483}}^1$

素因数の和:5612

約数の個数: 144

約数和(自身を含む): 50038297344

約数和(自身を除く): 29917003264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 61, 64, 80, 94, 122, 128, 160, 188, 235, 244, 256, 305, 320, 376, 470, 488, 610, 640, 752, 940, 976, 1220, 1280, 1504, 1880, 1952, 2440, 2867, 3008, 3760, 3904, 4880, 5483, 5734, 6016, 7520, 7808, 9760, 10966, 11468, 12032, 14335, 15040, 15616, 19520, 21932, 22936, 27415, 28670, 30080, 39040, 43864, 45872, 54830, 57340, 60160, 78080, 87728, 91744, 109660, 114680, 175456, 183488, 219320, 229360, 257701, 334463, 350912, 366976, 438640, 458720, 515402, 668926, 701824, 733952, 877280, 917440, 1030804, 1288505, 1337852, 1403648, 1672315, 1754560, 1834880, 2061608, 2577010, 2675704, 3344630, 3509120, 3669760, 4123216, 5154020, 5351408, 6689260, 7018240, 8246432, 10308040, 10702816, 13378520, 15719761, 16492864, 20616080, 21405632, 26757040, 31439522, 32985728, 41232160, 42811264, 53514080, 62879044, 65971456, 78598805, 82464320, 85622528, 107028160, 125758088, 157197610, 164928640, 214056320, 251516176, 314395220, 329857280, 428112640, 503032352, 628790440, 1006064704, 1257580880, 2012129408, 2515161760, 4024258816, 5030323520, 10060647040, 20121294080]

約数ペア:

[(1, 20121294080), (2, 10060647040), (4, 5030323520), (5, 4024258816), (8, 2515161760), (10, 2012129408), (16, 1257580880), (20, 1006064704), (32, 628790440), (40, 503032352), (47, 428112640), (61, 329857280), (64, 314395220), (80, 251516176), (94, 214056320), (122, 164928640), (128, 157197610), (160, 125758088), (188, 107028160), (235, 85622528), (244, 82464320), (256, 78598805), (305, 65971456), (320, 62879044), (376, 53514080), (470, 42811264), (488, 41232160), (610, 32985728), (640, 31439522), (752, 26757040), (940, 21405632), (976, 20616080), (1220, 16492864), (1280, 15719761), (1504, 13378520), (1880, 10702816), (1952, 10308040), (2440, 8246432), (2867, 7018240), (3008, 6689260), (3760, 5351408), (3904, 5154020), (4880, 4123216), (5483, 3669760), (5734, 3509120), (6016, 3344630), (7520, 2675704), (7808, 2577010), (9760, 2061608), (10966, 1834880), (11468, 1754560), (12032, 1672315), (14335, 1403648), (15040, 1337852), (15616, 1288505), (19520, 1030804), (21932, 917440), (22936, 877280), (27415, 733952), (28670, 701824), (30080, 668926), (39040, 515402), (43864, 458720), (45872, 438640), (54830, 366976), (57340, 350912), (60160, 334463), (78080, 257701), (87728, 229360), (91744, 219320), (109660, 183488), (114680, 175456)]