20975448

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:161

約数の個数: 128

約数和(自身を含む): 61286400

約数和(自身を除く): 40310952

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 23, 24, 26, 37, 39, 46, 52, 69, 74, 78, 79, 92, 104, 111, 138, 148, 156, 158, 184, 222, 237, 276, 296, 299, 312, 316, 444, 474, 481, 552, 598, 632, 851, 888, 897, 948, 962, 1027, 1196, 1443, 1702, 1794, 1817, 1896, 1924, 2054, 2392, 2553, 2886, 2923, 3081, 3404, 3588, 3634, 3848, 4108, 5106, 5451, 5772, 5846, 6162, 6808, 7176, 7268, 8216, 8769, 10212, 10902, 11063, 11544, 11692, 12324, 14536, 17538, 20424, 21804, 22126, 23384, 23621, 24648, 33189, 35076, 37999, 43608, 44252, 47242, 66378, 67229, 70152, 70863, 75998, 88504, 94484, 113997, 132756, 134458, 141726, 151996, 188968, 201687, 227994, 265512, 268916, 283452, 303992, 403374, 455988, 537832, 566904, 806748, 873977, 911976, 1613496, 1747954, 2621931, 3495908, 5243862, 6991816, 10487724, 20975448]

約数ペア:

[(1, 20975448), (2, 10487724), (3, 6991816), (4, 5243862), (6, 3495908), (8, 2621931), (12, 1747954), (13, 1613496), (23, 911976), (24, 873977), (26, 806748), (37, 566904), (39, 537832), (46, 455988), (52, 403374), (69, 303992), (74, 283452), (78, 268916), (79, 265512), (92, 227994), (104, 201687), (111, 188968), (138, 151996), (148, 141726), (156, 134458), (158, 132756), (184, 113997), (222, 94484), (237, 88504), (276, 75998), (296, 70863), (299, 70152), (312, 67229), (316, 66378), (444, 47242), (474, 44252), (481, 43608), (552, 37999), (598, 35076), (632, 33189), (851, 24648), (888, 23621), (897, 23384), (948, 22126), (962, 21804), (1027, 20424), (1196, 17538), (1443, 14536), (1702, 12324), (1794, 11692), (1817, 11544), (1896, 11063), (1924, 10902), (2054, 10212), (2392, 8769), (2553, 8216), (2886, 7268), (2923, 7176), (3081, 6808), (3404, 6162), (3588, 5846), (3634, 5772), (3848, 5451), (4108, 5106)]