21101355

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{907}}^1$

素因数の和:976

約数の個数: 48

約数和(自身を含む): 40794624

約数和(自身を除く): 19693269

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 47, 55, 99, 141, 165, 235, 423, 495, 517, 705, 907, 1551, 2115, 2585, 2721, 4535, 4653, 7755, 8163, 9977, 13605, 23265, 29931, 40815, 42629, 49885, 89793, 127887, 149655, 213145, 383661, 448965, 468919, 639435, 1406757, 1918305, 2344595, 4220271, 7033785, 21101355]

約数ペア:

[(1, 21101355), (3, 7033785), (5, 4220271), (9, 2344595), (11, 1918305), (15, 1406757), (33, 639435), (45, 468919), (47, 448965), (55, 383661), (99, 213145), (141, 149655), (165, 127887), (235, 89793), (423, 49885), (495, 42629), (517, 40815), (705, 29931), (907, 23265), (1551, 13605), (2115, 9977), (2585, 8163), (2721, 7755), (4535, 4653)]