21397341

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 33619968

約数和(自身を除く): 12222627

約数列:

[1, 3, 7, 21, 71, 113, 127, 213, 339, 381, 497, 791, 889, 1491, 2373, 2667, 8023, 9017, 14351, 24069, 27051, 43053, 56161, 63119, 100457, 168483, 189357, 301371, 1018921, 3056763, 7132447, 21397341]

約数ペア:

[(1, 21397341), (3, 7132447), (7, 3056763), (21, 1018921), (71, 301371), (113, 189357), (127, 168483), (213, 100457), (339, 63119), (381, 56161), (497, 43053), (791, 27051), (889, 24069), (1491, 14351), (2373, 9017), (2667, 8023)]