201661720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{4909}}^1$

素因数の和:5012

約数の個数: 64

約数和(自身を含む): 494928000

約数和(自身を除く): 293266280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 520, 632, 790, 1027, 1580, 2054, 3160, 4108, 4909, 5135, 8216, 9818, 10270, 19636, 20540, 24545, 39272, 41080, 49090, 63817, 98180, 127634, 196360, 255268, 319085, 387811, 510536, 638170, 775622, 1276340, 1551244, 1939055, 2552680, 3102488, 3878110, 5041543, 7756220, 10083086, 15512440, 20166172, 25207715, 40332344, 50415430, 100830860, 201661720]

約数ペア:

[(1, 201661720), (2, 100830860), (4, 50415430), (5, 40332344), (8, 25207715), (10, 20166172), (13, 15512440), (20, 10083086), (26, 7756220), (40, 5041543), (52, 3878110), (65, 3102488), (79, 2552680), (104, 1939055), (130, 1551244), (158, 1276340), (260, 775622), (316, 638170), (395, 510536), (520, 387811), (632, 319085), (790, 255268), (1027, 196360), (1580, 127634), (2054, 98180), (3160, 63817), (4108, 49090), (4909, 41080), (5135, 39272), (8216, 24545), (9818, 20540), (10270, 19636)]