18931716

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:341

約数の個数: 72

約数和(自身を含む): 50168664

約数和(自身を除く): 31236948

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 61, 74, 111, 122, 148, 183, 222, 233, 244, 333, 366, 444, 466, 549, 666, 699, 732, 932, 1098, 1332, 1398, 2097, 2196, 2257, 2796, 4194, 4514, 6771, 8388, 8621, 9028, 13542, 14213, 17242, 20313, 25863, 27084, 28426, 34484, 40626, 42639, 51726, 56852, 77589, 81252, 85278, 103452, 127917, 155178, 170556, 255834, 310356, 511668, 525881, 1051762, 1577643, 2103524, 3155286, 4732929, 6310572, 9465858, 18931716]

約数ペア:

[(1, 18931716), (2, 9465858), (3, 6310572), (4, 4732929), (6, 3155286), (9, 2103524), (12, 1577643), (18, 1051762), (36, 525881), (37, 511668), (61, 310356), (74, 255834), (111, 170556), (122, 155178), (148, 127917), (183, 103452), (222, 85278), (233, 81252), (244, 77589), (333, 56852), (366, 51726), (444, 42639), (466, 40626), (549, 34484), (666, 28426), (699, 27084), (732, 25863), (932, 20313), (1098, 17242), (1332, 14213), (1398, 13542), (2097, 9028), (2196, 8621), (2257, 8388), (2796, 6771), (4194, 4514)]