21222145

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 32175360

約数和(自身を除く): 10953215

約数列:

[1, 5, 7, 19, 35, 47, 49, 95, 97, 133, 235, 245, 329, 485, 665, 679, 893, 931, 1645, 1843, 2303, 3395, 4465, 4559, 4655, 4753, 6251, 9215, 11515, 12901, 22795, 23765, 31255, 31913, 43757, 64505, 86621, 90307, 159565, 218785, 223391, 433105, 451535, 606347, 1116955, 3031735, 4244429, 21222145]

約数ペア:

[(1, 21222145), (5, 4244429), (7, 3031735), (19, 1116955), (35, 606347), (47, 451535), (49, 433105), (95, 223391), (97, 218785), (133, 159565), (235, 90307), (245, 86621), (329, 64505), (485, 43757), (665, 31913), (679, 31255), (893, 23765), (931, 22795), (1645, 12901), (1843, 11515), (2303, 9215), (3395, 6251), (4465, 4753), (4559, 4655)]