20883780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{641}}^1$

素因数の和:837

約数の個数: 72

約数和(自身を含む): 63796824

約数和(自身を除く): 42913044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 181, 362, 543, 641, 724, 905, 1086, 1282, 1629, 1810, 1923, 2172, 2564, 2715, 3205, 3258, 3620, 3846, 5430, 5769, 6410, 6516, 7692, 8145, 9615, 10860, 11538, 12820, 16290, 19230, 23076, 28845, 32580, 38460, 57690, 115380, 116021, 232042, 348063, 464084, 580105, 696126, 1044189, 1160210, 1392252, 1740315, 2088378, 2320420, 3480630, 4176756, 5220945, 6961260, 10441890, 20883780]

約数ペア:

[(1, 20883780), (2, 10441890), (3, 6961260), (4, 5220945), (5, 4176756), (6, 3480630), (9, 2320420), (10, 2088378), (12, 1740315), (15, 1392252), (18, 1160210), (20, 1044189), (30, 696126), (36, 580105), (45, 464084), (60, 348063), (90, 232042), (180, 116021), (181, 115380), (362, 57690), (543, 38460), (641, 32580), (724, 28845), (905, 23076), (1086, 19230), (1282, 16290), (1629, 12820), (1810, 11538), (1923, 10860), (2172, 9615), (2564, 8145), (2715, 7692), (3205, 6516), (3258, 6410), (3620, 5769), (3846, 5430)]