21491392

素因数分解:

$2^6\times {\mathrm{13}}^2\times {\mathrm{1987}}^1$

素因数の和:2025

約数の個数: 42

約数和(自身を含む): 46203108

約数和(自身を除く): 24711716

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 169, 208, 338, 416, 676, 832, 1352, 1987, 2704, 3974, 5408, 7948, 10816, 15896, 25831, 31792, 51662, 63584, 103324, 127168, 206648, 335803, 413296, 671606, 826592, 1343212, 1653184, 2686424, 5372848, 10745696, 21491392]

約数ペア:

[(1, 21491392), (2, 10745696), (4, 5372848), (8, 2686424), (13, 1653184), (16, 1343212), (26, 826592), (32, 671606), (52, 413296), (64, 335803), (104, 206648), (169, 127168), (208, 103324), (338, 63584), (416, 51662), (676, 31792), (832, 25831), (1352, 15896), (1987, 10816), (2704, 7948), (3974, 5408)]