21215754

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1033}}^1$

素因数の和:1211

約数の個数: 48

約数和(自身を含む): 52907712

約数和(自身を除く): 31691958

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 163, 326, 489, 978, 1033, 1141, 1467, 2066, 2282, 2934, 3099, 3423, 6198, 6846, 7231, 9297, 10269, 14462, 18594, 20538, 21693, 43386, 65079, 130158, 168379, 336758, 505137, 1010274, 1178653, 1515411, 2357306, 3030822, 3535959, 7071918, 10607877, 21215754]

約数ペア:

[(1, 21215754), (2, 10607877), (3, 7071918), (6, 3535959), (7, 3030822), (9, 2357306), (14, 1515411), (18, 1178653), (21, 1010274), (42, 505137), (63, 336758), (126, 168379), (163, 130158), (326, 65079), (489, 43386), (978, 21693), (1033, 20538), (1141, 18594), (1467, 14462), (2066, 10269), (2282, 9297), (2934, 7231), (3099, 6846), (3423, 6198)]