20215503

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{941}}^1$

素因数の和:996

約数の個数: 48

約数和(自身を含む): 37619712

約数和(自身を除く): 17404209

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 63, 77, 93, 99, 217, 231, 279, 341, 651, 693, 941, 1023, 1953, 2387, 2823, 3069, 6587, 7161, 8469, 10351, 19761, 21483, 29171, 31053, 59283, 72457, 87513, 93159, 204197, 217371, 262539, 320881, 612591, 652113, 962643, 1837773, 2246167, 2887929, 6738501, 20215503]

約数ペア:

[(1, 20215503), (3, 6738501), (7, 2887929), (9, 2246167), (11, 1837773), (21, 962643), (31, 652113), (33, 612591), (63, 320881), (77, 262539), (93, 217371), (99, 204197), (217, 93159), (231, 87513), (279, 72457), (341, 59283), (651, 31053), (693, 29171), (941, 21483), (1023, 19761), (1953, 10351), (2387, 8469), (2823, 7161), (3069, 6587)]