15639880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5507}}^1$

素因数の和:5589

約数の個数: 32

約数和(自身を含む): 35691840

約数和(自身を除く): 20051960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 5507, 11014, 22028, 27535, 44056, 55070, 110140, 220280, 390997, 781994, 1563988, 1954985, 3127976, 3909970, 7819940, 15639880]

約数ペア:

[(1, 15639880), (2, 7819940), (4, 3909970), (5, 3127976), (8, 1954985), (10, 1563988), (20, 781994), (40, 390997), (71, 220280), (142, 110140), (284, 55070), (355, 44056), (568, 27535), (710, 22028), (1420, 11014), (2840, 5507)]