20992986

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:153

約数の個数: 128

約数和(自身を含む): 58368000

約数和(自身を除く): 37375014

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 27, 37, 38, 42, 54, 57, 63, 74, 79, 111, 114, 126, 133, 158, 171, 189, 222, 237, 259, 266, 333, 342, 378, 399, 474, 513, 518, 553, 666, 703, 711, 777, 798, 999, 1026, 1106, 1197, 1406, 1422, 1501, 1554, 1659, 1998, 2109, 2133, 2331, 2394, 2923, 3002, 3318, 3591, 4218, 4266, 4503, 4662, 4921, 4977, 5846, 6327, 6993, 7182, 8769, 9006, 9842, 9954, 10507, 12654, 13509, 13986, 14763, 14931, 17538, 18981, 20461, 21014, 26307, 27018, 29526, 29862, 31521, 37962, 40527, 40922, 44289, 52614, 55537, 61383, 63042, 78921, 81054, 88578, 94563, 111074, 122766, 132867, 157842, 166611, 184149, 189126, 265734, 283689, 333222, 368298, 388759, 499833, 552447, 567378, 777518, 999666, 1104894, 1166277, 1499499, 2332554, 2998998, 3498831, 6997662, 10496493, 20992986]

約数ペア:

[(1, 20992986), (2, 10496493), (3, 6997662), (6, 3498831), (7, 2998998), (9, 2332554), (14, 1499499), (18, 1166277), (19, 1104894), (21, 999666), (27, 777518), (37, 567378), (38, 552447), (42, 499833), (54, 388759), (57, 368298), (63, 333222), (74, 283689), (79, 265734), (111, 189126), (114, 184149), (126, 166611), (133, 157842), (158, 132867), (171, 122766), (189, 111074), (222, 94563), (237, 88578), (259, 81054), (266, 78921), (333, 63042), (342, 61383), (378, 55537), (399, 52614), (474, 44289), (513, 40922), (518, 40527), (553, 37962), (666, 31521), (703, 29862), (711, 29526), (777, 27018), (798, 26307), (999, 21014), (1026, 20461), (1106, 18981), (1197, 17538), (1406, 14931), (1422, 14763), (1501, 13986), (1554, 13509), (1659, 12654), (1998, 10507), (2109, 9954), (2133, 9842), (2331, 9006), (2394, 8769), (2923, 7182), (3002, 6993), (3318, 6327), (3591, 5846), (4218, 4977), (4266, 4921), (4503, 4662)]