21012197906

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4219}}^1\times {\mathrm{15467}}^1$

素因数の和:19718

約数の個数: 32

約数和(自身を含む): 37598376960

約数和(自身を除く): 16586179054

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 4219, 8438, 15467, 29533, 30934, 59066, 97037, 108269, 194074, 216538, 355741, 679259, 711482, 1358518, 2490187, 4980374, 65255273, 130510546, 456786911, 913573822, 1500871279, 3001742558, 10506098953, 21012197906]

約数ペア:

[(1, 21012197906), (2, 10506098953), (7, 3001742558), (14, 1500871279), (23, 913573822), (46, 456786911), (161, 130510546), (322, 65255273), (4219, 4980374), (8438, 2490187), (15467, 1358518), (29533, 711482), (30934, 679259), (59066, 355741), (97037, 216538), (108269, 194074)]