20019780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10111}}^1$

素因数の和:10137

約数の個数: 72

約数和(自身を含む): 66253824

約数和(自身を除く): 46234044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10111, 20222, 30333, 40444, 50555, 60666, 90999, 101110, 111221, 121332, 151665, 181998, 202220, 222442, 303330, 333663, 363996, 444884, 454995, 556105, 606660, 667326, 909990, 1000989, 1112210, 1334652, 1668315, 1819980, 2001978, 2224420, 3336630, 4003956, 5004945, 6673260, 10009890, 20019780]

約数ペア:

[(1, 20019780), (2, 10009890), (3, 6673260), (4, 5004945), (5, 4003956), (6, 3336630), (9, 2224420), (10, 2001978), (11, 1819980), (12, 1668315), (15, 1334652), (18, 1112210), (20, 1000989), (22, 909990), (30, 667326), (33, 606660), (36, 556105), (44, 454995), (45, 444884), (55, 363996), (60, 333663), (66, 303330), (90, 222442), (99, 202220), (110, 181998), (132, 151665), (165, 121332), (180, 111221), (198, 101110), (220, 90999), (330, 60666), (396, 50555), (495, 40444), (660, 30333), (990, 20222), (1980, 10111)]