20662988

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{2347}}^1$

素因数の和:2453

約数の個数: 24

約数和(自身を含む): 37868544

約数和(自身を除く): 17205556

約数列:

[1, 2, 4, 31, 62, 71, 124, 142, 284, 2201, 2347, 4402, 4694, 8804, 9388, 72757, 145514, 166637, 291028, 333274, 666548, 5165747, 10331494, 20662988]

約数ペア:

[(1, 20662988), (2, 10331494), (4, 5165747), (31, 666548), (62, 333274), (71, 291028), (124, 166637), (142, 145514), (284, 72757), (2201, 9388), (2347, 8804), (4402, 4694)]