21488272

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:200

約数の個数: 80

約数和(自身を含む): 48746880

約数和(自身を除く): 27258608

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 59, 68, 103, 104, 118, 136, 206, 208, 221, 236, 272, 412, 442, 472, 767, 824, 884, 944, 1003, 1339, 1534, 1648, 1751, 1768, 2006, 2678, 3068, 3502, 3536, 4012, 5356, 6077, 6136, 7004, 8024, 10712, 12154, 12272, 13039, 14008, 16048, 21424, 22763, 24308, 26078, 28016, 45526, 48616, 52156, 79001, 91052, 97232, 103309, 104312, 158002, 182104, 206618, 208624, 316004, 364208, 413236, 632008, 826472, 1264016, 1343017, 1652944, 2686034, 5372068, 10744136, 21488272]

約数ペア:

[(1, 21488272), (2, 10744136), (4, 5372068), (8, 2686034), (13, 1652944), (16, 1343017), (17, 1264016), (26, 826472), (34, 632008), (52, 413236), (59, 364208), (68, 316004), (103, 208624), (104, 206618), (118, 182104), (136, 158002), (206, 104312), (208, 103309), (221, 97232), (236, 91052), (272, 79001), (412, 52156), (442, 48616), (472, 45526), (767, 28016), (824, 26078), (884, 24308), (944, 22763), (1003, 21424), (1339, 16048), (1534, 14008), (1648, 13039), (1751, 12272), (1768, 12154), (2006, 10712), (2678, 8024), (3068, 7004), (3502, 6136), (3536, 6077), (4012, 5356)]