21720006

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{15671}}^1$

素因数の和:15697

約数の個数: 48

約数和(自身を含む): 58675968

約数和(自身を除く): 36955962

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 33, 42, 63, 66, 77, 99, 126, 154, 198, 231, 462, 693, 1386, 15671, 31342, 47013, 94026, 109697, 141039, 172381, 219394, 282078, 329091, 344762, 517143, 658182, 987273, 1034286, 1206667, 1551429, 1974546, 2413334, 3102858, 3620001, 7240002, 10860003, 21720006]

約数ペア:

[(1, 21720006), (2, 10860003), (3, 7240002), (6, 3620001), (7, 3102858), (9, 2413334), (11, 1974546), (14, 1551429), (18, 1206667), (21, 1034286), (22, 987273), (33, 658182), (42, 517143), (63, 344762), (66, 329091), (77, 282078), (99, 219394), (126, 172381), (154, 141039), (198, 109697), (231, 94026), (462, 47013), (693, 31342), (1386, 15671)]