20788896752

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{647}}^1\times {\mathrm{863}}^1$

素因数の和:1710

約数の個数: 80

約数和(自身を含む): 43737200640

約数和(自身を除く): 22948303888

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 179, 208, 358, 647, 716, 863, 1294, 1432, 1726, 2327, 2588, 2864, 3452, 4654, 5176, 6904, 8411, 9308, 10352, 11219, 13808, 16822, 18616, 22438, 33644, 37232, 44876, 67288, 89752, 115813, 134576, 154477, 179504, 231626, 308954, 463252, 558361, 617908, 926504, 1116722, 1235816, 1505569, 1853008, 2008201, 2233444, 2471632, 3011138, 4016402, 4466888, 6022276, 7258693, 8032804, 8933776, 12044552, 14517386, 16065608, 24089104, 29034772, 32131216, 58069544, 99946619, 116139088, 199893238, 399786476, 799572952, 1299306047, 1599145904, 2598612094, 5197224188, 10394448376, 20788896752]

約数ペア:

[(1, 20788896752), (2, 10394448376), (4, 5197224188), (8, 2598612094), (13, 1599145904), (16, 1299306047), (26, 799572952), (52, 399786476), (104, 199893238), (179, 116139088), (208, 99946619), (358, 58069544), (647, 32131216), (716, 29034772), (863, 24089104), (1294, 16065608), (1432, 14517386), (1726, 12044552), (2327, 8933776), (2588, 8032804), (2864, 7258693), (3452, 6022276), (4654, 4466888), (5176, 4016402), (6904, 3011138), (8411, 2471632), (9308, 2233444), (10352, 2008201), (11219, 1853008), (13808, 1505569), (16822, 1235816), (18616, 1116722), (22438, 926504), (33644, 617908), (37232, 558361), (44876, 463252), (67288, 308954), (89752, 231626), (115813, 179504), (134576, 154477)]