21780972

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{673}}^1$

素因数の和:743

約数の個数: 72

約数和(自身を含む): 58880640

約数和(自身を除く): 37099668

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 31, 36, 58, 62, 87, 93, 116, 124, 174, 186, 261, 279, 348, 372, 522, 558, 673, 899, 1044, 1116, 1346, 1798, 2019, 2692, 2697, 3596, 4038, 5394, 6057, 8076, 8091, 10788, 12114, 16182, 19517, 20863, 24228, 32364, 39034, 41726, 58551, 62589, 78068, 83452, 117102, 125178, 175653, 187767, 234204, 250356, 351306, 375534, 605027, 702612, 751068, 1210054, 1815081, 2420108, 3630162, 5445243, 7260324, 10890486, 21780972]

約数ペア:

[(1, 21780972), (2, 10890486), (3, 7260324), (4, 5445243), (6, 3630162), (9, 2420108), (12, 1815081), (18, 1210054), (29, 751068), (31, 702612), (36, 605027), (58, 375534), (62, 351306), (87, 250356), (93, 234204), (116, 187767), (124, 175653), (174, 125178), (186, 117102), (261, 83452), (279, 78068), (348, 62589), (372, 58551), (522, 41726), (558, 39034), (673, 32364), (899, 24228), (1044, 20863), (1116, 19517), (1346, 16182), (1798, 12114), (2019, 10788), (2692, 8091), (2697, 8076), (3596, 6057), (4038, 5394)]