20880147184

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{39631}}^1$

素因数の和:39818

約数の個数: 80

約数和(自身を含む): 46440777600

約数和(自身を除く): 25560630416

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 149, 208, 221, 272, 298, 442, 596, 884, 1192, 1768, 1937, 2384, 2533, 3536, 3874, 5066, 7748, 10132, 15496, 20264, 30992, 32929, 39631, 40528, 65858, 79262, 131716, 158524, 263432, 317048, 515203, 526864, 634096, 673727, 1030406, 1347454, 2060812, 2694908, 4121624, 5389816, 5905019, 8243248, 8758451, 10779632, 11810038, 17516902, 23620076, 35033804, 47240152, 70067608, 76765247, 94480304, 100385323, 140135216, 153530494, 200770646, 307060988, 401541292, 614121976, 803082584, 1228243952, 1305009199, 1606165168, 2610018398, 5220036796, 10440073592, 20880147184]

約数ペア:

[(1, 20880147184), (2, 10440073592), (4, 5220036796), (8, 2610018398), (13, 1606165168), (16, 1305009199), (17, 1228243952), (26, 803082584), (34, 614121976), (52, 401541292), (68, 307060988), (104, 200770646), (136, 153530494), (149, 140135216), (208, 100385323), (221, 94480304), (272, 76765247), (298, 70067608), (442, 47240152), (596, 35033804), (884, 23620076), (1192, 17516902), (1768, 11810038), (1937, 10779632), (2384, 8758451), (2533, 8243248), (3536, 5905019), (3874, 5389816), (5066, 4121624), (7748, 2694908), (10132, 2060812), (15496, 1347454), (20264, 1030406), (30992, 673727), (32929, 634096), (39631, 526864), (40528, 515203), (65858, 317048), (79262, 263432), (131716, 158524)]