20171728208

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{313}}^1\times {\mathrm{56731}}^1$

素因数の和:57123

約数の個数: 40

約数和(自身を含む): 39760508736

約数和(自身を除く): 19588780528

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 313, 568, 626, 1136, 1252, 2504, 5008, 22223, 44446, 56731, 88892, 113462, 177784, 226924, 355568, 453848, 907696, 4027901, 8055802, 16111604, 17756803, 32223208, 35513606, 64446416, 71027212, 142054424, 284108848, 1260733013, 2521466026, 5042932052, 10085864104, 20171728208]

約数ペア:

[(1, 20171728208), (2, 10085864104), (4, 5042932052), (8, 2521466026), (16, 1260733013), (71, 284108848), (142, 142054424), (284, 71027212), (313, 64446416), (568, 35513606), (626, 32223208), (1136, 17756803), (1252, 16111604), (2504, 8055802), (5008, 4027901), (22223, 907696), (44446, 453848), (56731, 355568), (88892, 226924), (113462, 177784)]