18992020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 96

約数和(自身を含む): 45722880

約数和(自身を除く): 26730860

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 41, 46, 53, 76, 82, 92, 95, 106, 115, 164, 190, 205, 212, 230, 265, 380, 410, 437, 460, 530, 779, 820, 874, 943, 1007, 1060, 1219, 1558, 1748, 1886, 2014, 2173, 2185, 2438, 3116, 3772, 3895, 4028, 4346, 4370, 4715, 4876, 5035, 6095, 7790, 8692, 8740, 9430, 10070, 10865, 12190, 15580, 17917, 18860, 20140, 21730, 23161, 24380, 35834, 41287, 43460, 46322, 49979, 71668, 82574, 89585, 92644, 99958, 115805, 165148, 179170, 199916, 206435, 231610, 249895, 358340, 412870, 463220, 499790, 825740, 949601, 999580, 1899202, 3798404, 4748005, 9496010, 18992020]

約数ペア:

[(1, 18992020), (2, 9496010), (4, 4748005), (5, 3798404), (10, 1899202), (19, 999580), (20, 949601), (23, 825740), (38, 499790), (41, 463220), (46, 412870), (53, 358340), (76, 249895), (82, 231610), (92, 206435), (95, 199916), (106, 179170), (115, 165148), (164, 115805), (190, 99958), (205, 92644), (212, 89585), (230, 82574), (265, 71668), (380, 49979), (410, 46322), (437, 43460), (460, 41287), (530, 35834), (779, 24380), (820, 23161), (874, 21730), (943, 20140), (1007, 18860), (1060, 17917), (1219, 15580), (1558, 12190), (1748, 10865), (1886, 10070), (2014, 9430), (2173, 8740), (2185, 8692), (2438, 7790), (3116, 6095), (3772, 5035), (3895, 4876), (4028, 4715), (4346, 4370)]