21870508

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{619}}^1$

素因数の和:718

約数の個数: 36

約数和(自身を含む): 42714280

約数和(自身を除く): 20843772

約数列:

[1, 2, 4, 11, 22, 44, 73, 121, 146, 242, 292, 484, 619, 803, 1238, 1606, 2476, 3212, 6809, 8833, 13618, 17666, 27236, 35332, 45187, 74899, 90374, 149798, 180748, 299596, 497057, 994114, 1988228, 5467627, 10935254, 21870508]

約数ペア:

[(1, 21870508), (2, 10935254), (4, 5467627), (11, 1988228), (22, 994114), (44, 497057), (73, 299596), (121, 180748), (146, 149798), (242, 90374), (292, 74899), (484, 45187), (619, 35332), (803, 27236), (1238, 17666), (1606, 13618), (2476, 8833), (3212, 6809)]