181819980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6197}}^1$

素因数の和:6375

約数の個数: 72

約数和(自身を含む): 554993712

約数和(自身を除く): 373173732

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 652, 815, 978, 1467, 1630, 1956, 2445, 2934, 3260, 4890, 5868, 6197, 7335, 9780, 12394, 14670, 18591, 24788, 29340, 30985, 37182, 55773, 61970, 74364, 92955, 111546, 123940, 185910, 223092, 278865, 371820, 557730, 1010111, 1115460, 2020222, 3030333, 4040444, 5050555, 6060666, 9090999, 10101110, 12121332, 15151665, 18181998, 20202220, 30303330, 36363996, 45454995, 60606660, 90909990, 181819980]

約数ペア:

[(1, 181819980), (2, 90909990), (3, 60606660), (4, 45454995), (5, 36363996), (6, 30303330), (9, 20202220), (10, 18181998), (12, 15151665), (15, 12121332), (18, 10101110), (20, 9090999), (30, 6060666), (36, 5050555), (45, 4040444), (60, 3030333), (90, 2020222), (163, 1115460), (180, 1010111), (326, 557730), (489, 371820), (652, 278865), (815, 223092), (978, 185910), (1467, 123940), (1630, 111546), (1956, 92955), (2445, 74364), (2934, 61970), (3260, 55773), (4890, 37182), (5868, 30985), (6197, 29340), (7335, 24788), (9780, 18591), (12394, 14670)]