20105385248

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{647}}^1\times {\mathrm{74699}}^1$

素因数の和:75369

約数の個数: 48

約数和(自身を含む): 42693739200

約数和(自身を除く): 22588353952

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 647, 1294, 2588, 5176, 8411, 10352, 16822, 20704, 33644, 67288, 74699, 134576, 149398, 269152, 298796, 597592, 971087, 1195184, 1942174, 2390368, 3884348, 7768696, 15537392, 31074784, 48330253, 96660506, 193321012, 386642024, 628293289, 773284048, 1256586578, 1546568096, 2513173156, 5026346312, 10052692624, 20105385248]

約数ペア:

[(1, 20105385248), (2, 10052692624), (4, 5026346312), (8, 2513173156), (13, 1546568096), (16, 1256586578), (26, 773284048), (32, 628293289), (52, 386642024), (104, 193321012), (208, 96660506), (416, 48330253), (647, 31074784), (1294, 15537392), (2588, 7768696), (5176, 3884348), (8411, 2390368), (10352, 1942174), (16822, 1195184), (20704, 971087), (33644, 597592), (67288, 298796), (74699, 269152), (134576, 149398)]