21158028

素因数分解:

$2^2\times 3^2\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 55434288

約数和(自身を除く): 34276260

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 73, 83, 97, 146, 166, 194, 219, 249, 291, 292, 332, 388, 438, 498, 582, 657, 747, 873, 876, 996, 1164, 1314, 1494, 1746, 2628, 2988, 3492, 6059, 7081, 8051, 12118, 14162, 16102, 18177, 21243, 24153, 24236, 28324, 32204, 36354, 42486, 48306, 54531, 63729, 72459, 72708, 84972, 96612, 109062, 127458, 144918, 218124, 254916, 289836, 587723, 1175446, 1763169, 2350892, 3526338, 5289507, 7052676, 10579014, 21158028]

約数ペア:

[(1, 21158028), (2, 10579014), (3, 7052676), (4, 5289507), (6, 3526338), (9, 2350892), (12, 1763169), (18, 1175446), (36, 587723), (73, 289836), (83, 254916), (97, 218124), (146, 144918), (166, 127458), (194, 109062), (219, 96612), (249, 84972), (291, 72708), (292, 72459), (332, 63729), (388, 54531), (438, 48306), (498, 42486), (582, 36354), (657, 32204), (747, 28324), (873, 24236), (876, 24153), (996, 21243), (1164, 18177), (1314, 16102), (1494, 14162), (1746, 12118), (2628, 8051), (2988, 7081), (3492, 6059)]