219047140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{842489}}^1$

素因数の和:842511

約数の個数: 24

約数和(自身を含む): 495384120

約数和(自身を除く): 276336980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 842489, 1684978, 3369956, 4212445, 8424890, 10952357, 16849780, 21904714, 43809428, 54761785, 109523570, 219047140]

約数ペア:

[(1, 219047140), (2, 109523570), (4, 54761785), (5, 43809428), (10, 21904714), (13, 16849780), (20, 10952357), (26, 8424890), (52, 4212445), (65, 3369956), (130, 1684978), (260, 842489)]