19794420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{397}}^1$

素因数の和:689

約数の個数: 72

約数和(自身を含む): 60411624

約数和(自身を除く): 40617204

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 277, 397, 554, 794, 831, 1108, 1191, 1385, 1588, 1662, 1985, 2382, 2493, 2770, 3324, 3573, 3970, 4155, 4764, 4986, 5540, 5955, 7146, 7940, 8310, 9972, 11910, 12465, 14292, 16620, 17865, 23820, 24930, 35730, 49860, 71460, 109969, 219938, 329907, 439876, 549845, 659814, 989721, 1099690, 1319628, 1649535, 1979442, 2199380, 3299070, 3958884, 4948605, 6598140, 9897210, 19794420]

約数ペア:

[(1, 19794420), (2, 9897210), (3, 6598140), (4, 4948605), (5, 3958884), (6, 3299070), (9, 2199380), (10, 1979442), (12, 1649535), (15, 1319628), (18, 1099690), (20, 989721), (30, 659814), (36, 549845), (45, 439876), (60, 329907), (90, 219938), (180, 109969), (277, 71460), (397, 49860), (554, 35730), (794, 24930), (831, 23820), (1108, 17865), (1191, 16620), (1385, 14292), (1588, 12465), (1662, 11910), (1985, 9972), (2382, 8310), (2493, 7940), (2770, 7146), (3324, 5955), (3573, 5540), (3970, 4986), (4155, 4764)]