20193745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{463}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 28998144

約数和(自身を除く): 8804399

約数列:

[1, 5, 11, 13, 55, 61, 65, 143, 305, 463, 671, 715, 793, 2315, 3355, 3965, 5093, 6019, 8723, 25465, 28243, 30095, 43615, 66209, 141215, 310673, 331045, 367159, 1553365, 1835795, 4038749, 20193745]

約数ペア:

[(1, 20193745), (5, 4038749), (11, 1835795), (13, 1553365), (55, 367159), (61, 331045), (65, 310673), (143, 141215), (305, 66209), (463, 43615), (671, 30095), (715, 28243), (793, 25465), (2315, 8723), (3355, 6019), (3965, 5093)]