20338240

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4889}}^1$

素因数の和:4919

約数の個数: 56

約数和(自身を含む): 52166520

約数和(自身を除く): 31828280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4889, 9778, 19556, 24445, 39112, 48890, 63557, 78224, 97780, 127114, 156448, 195560, 254228, 312896, 317785, 391120, 508456, 635570, 782240, 1016912, 1271140, 1564480, 2033824, 2542280, 4067648, 5084560, 10169120, 20338240]

約数ペア:

[(1, 20338240), (2, 10169120), (4, 5084560), (5, 4067648), (8, 2542280), (10, 2033824), (13, 1564480), (16, 1271140), (20, 1016912), (26, 782240), (32, 635570), (40, 508456), (52, 391120), (64, 317785), (65, 312896), (80, 254228), (104, 195560), (130, 156448), (160, 127114), (208, 97780), (260, 78224), (320, 63557), (416, 48890), (520, 39112), (832, 24445), (1040, 19556), (2080, 9778), (4160, 4889)]