21855548

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2011}}^1$

素因数の和:2058

約数の個数: 48

約数和(自身を含む): 47322240

約数和(自身を除く): 25466692

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 143, 209, 247, 286, 418, 494, 572, 836, 988, 2011, 2717, 4022, 5434, 8044, 10868, 22121, 26143, 38209, 44242, 52286, 76418, 88484, 104572, 152836, 287573, 420299, 496717, 575146, 840598, 993434, 1150292, 1681196, 1986868, 5463887, 10927774, 21855548]

約数ペア:

[(1, 21855548), (2, 10927774), (4, 5463887), (11, 1986868), (13, 1681196), (19, 1150292), (22, 993434), (26, 840598), (38, 575146), (44, 496717), (52, 420299), (76, 287573), (143, 152836), (209, 104572), (247, 88484), (286, 76418), (418, 52286), (494, 44242), (572, 38209), (836, 26143), (988, 22121), (2011, 10868), (2717, 8044), (4022, 5434)]