21590840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28409}}^1$

素因数の和:28439

約数の個数: 32

約数和(自身を含む): 51138000

約数和(自身を除く): 29547160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28409, 56818, 113636, 142045, 227272, 284090, 539771, 568180, 1079542, 1136360, 2159084, 2698855, 4318168, 5397710, 10795420, 21590840]

約数ペア:

[(1, 21590840), (2, 10795420), (4, 5397710), (5, 4318168), (8, 2698855), (10, 2159084), (19, 1136360), (20, 1079542), (38, 568180), (40, 539771), (76, 284090), (95, 227272), (152, 142045), (190, 113636), (380, 56818), (760, 28409)]