21091424

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{283}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 44443728

約数和(自身を除く): 23352304

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 137, 272, 274, 283, 544, 548, 566, 1096, 1132, 2192, 2264, 2329, 4384, 4528, 4658, 4811, 9056, 9316, 9622, 18632, 19244, 37264, 38488, 38771, 74528, 76976, 77542, 153952, 155084, 310168, 620336, 659107, 1240672, 1318214, 2636428, 5272856, 10545712, 21091424]

約数ペア:

[(1, 21091424), (2, 10545712), (4, 5272856), (8, 2636428), (16, 1318214), (17, 1240672), (32, 659107), (34, 620336), (68, 310168), (136, 155084), (137, 153952), (272, 77542), (274, 76976), (283, 74528), (544, 38771), (548, 38488), (566, 37264), (1096, 19244), (1132, 18632), (2192, 9622), (2264, 9316), (2329, 9056), (4384, 4811), (4528, 4658)]