31506321

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 56733696

約数和(自身を除く): 25227375

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 71, 77, 113, 119, 187, 213, 231, 339, 357, 497, 561, 781, 791, 1207, 1243, 1309, 1491, 1921, 2343, 2373, 3621, 3729, 3927, 5467, 5763, 8023, 8449, 8701, 13277, 13447, 16401, 21131, 24069, 25347, 26103, 39831, 40341, 56161, 63393, 88253, 92939, 136391, 147917, 168483, 264759, 278817, 409173, 443751, 617771, 954737, 1500301, 1853313, 2864211, 4500903, 10502107, 31506321]

約数ペア:

[(1, 31506321), (3, 10502107), (7, 4500903), (11, 2864211), (17, 1853313), (21, 1500301), (33, 954737), (51, 617771), (71, 443751), (77, 409173), (113, 278817), (119, 264759), (187, 168483), (213, 147917), (231, 136391), (339, 92939), (357, 88253), (497, 63393), (561, 56161), (781, 40341), (791, 39831), (1207, 26103), (1243, 25347), (1309, 24069), (1491, 21131), (1921, 16401), (2343, 13447), (2373, 13277), (3621, 8701), (3729, 8449), (3927, 8023), (5467, 5763)]