19801224

素因数分解:

$2^3\times 3^2\times {\mathrm{53}}^1\times {\mathrm{5189}}^1$

素因数の和:5254

約数の個数: 48

約数和(自身を含む): 54650700

約数和(自身を除く): 34849476

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 53, 72, 106, 159, 212, 318, 424, 477, 636, 954, 1272, 1908, 3816, 5189, 10378, 15567, 20756, 31134, 41512, 46701, 62268, 93402, 124536, 186804, 275017, 373608, 550034, 825051, 1100068, 1650102, 2200136, 2475153, 3300204, 4950306, 6600408, 9900612, 19801224]

約数ペア:

[(1, 19801224), (2, 9900612), (3, 6600408), (4, 4950306), (6, 3300204), (8, 2475153), (9, 2200136), (12, 1650102), (18, 1100068), (24, 825051), (36, 550034), (53, 373608), (72, 275017), (106, 186804), (159, 124536), (212, 93402), (318, 62268), (424, 46701), (477, 41512), (636, 31134), (954, 20756), (1272, 15567), (1908, 10378), (3816, 5189)]