21964195

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 8517725

約数列:

[1, 5, 11, 23, 55, 97, 115, 179, 253, 485, 895, 1067, 1265, 1969, 2231, 4117, 5335, 9845, 11155, 17363, 20585, 24541, 45287, 86815, 122705, 190993, 226435, 399349, 954965, 1996745, 4392839, 21964195]

約数ペア:

[(1, 21964195), (5, 4392839), (11, 1996745), (23, 954965), (55, 399349), (97, 226435), (115, 190993), (179, 122705), (253, 86815), (485, 45287), (895, 24541), (1067, 20585), (1265, 17363), (1969, 11155), (2231, 9845), (4117, 5335)]