20990844

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2687}}^1$

素因数の和:2735

約数の個数: 72

約数和(自身を含む): 62619648

約数和(自身を除く): 41628804

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 186, 217, 252, 279, 372, 434, 558, 651, 868, 1116, 1302, 1953, 2604, 2687, 3906, 5374, 7812, 8061, 10748, 16122, 18809, 24183, 32244, 37618, 48366, 56427, 75236, 83297, 96732, 112854, 166594, 169281, 225708, 249891, 333188, 338562, 499782, 583079, 677124, 749673, 999564, 1166158, 1499346, 1749237, 2332316, 2998692, 3498474, 5247711, 6996948, 10495422, 20990844]

約数ペア:

[(1, 20990844), (2, 10495422), (3, 6996948), (4, 5247711), (6, 3498474), (7, 2998692), (9, 2332316), (12, 1749237), (14, 1499346), (18, 1166158), (21, 999564), (28, 749673), (31, 677124), (36, 583079), (42, 499782), (62, 338562), (63, 333188), (84, 249891), (93, 225708), (124, 169281), (126, 166594), (186, 112854), (217, 96732), (252, 83297), (279, 75236), (372, 56427), (434, 48366), (558, 37618), (651, 32244), (868, 24183), (1116, 18809), (1302, 16122), (1953, 10748), (2604, 8061), (2687, 7812), (3906, 5374)]