21763497

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 36312192

約数和(自身を除く): 14548695

約数列:

[1, 3, 7, 21, 23, 41, 49, 69, 123, 147, 157, 161, 287, 471, 483, 861, 943, 1099, 1127, 2009, 2829, 3297, 3381, 3611, 6027, 6437, 6601, 7693, 10833, 19311, 19803, 23079, 25277, 45059, 46207, 75831, 135177, 138621, 148051, 176939, 315413, 444153, 530817, 946239, 1036357, 3109071, 7254499, 21763497]

約数ペア:

[(1, 21763497), (3, 7254499), (7, 3109071), (21, 1036357), (23, 946239), (41, 530817), (49, 444153), (69, 315413), (123, 176939), (147, 148051), (157, 138621), (161, 135177), (287, 75831), (471, 46207), (483, 45059), (861, 25277), (943, 23079), (1099, 19803), (1127, 19311), (2009, 10833), (2829, 7693), (3297, 6601), (3381, 6437), (3611, 6027)]