21496671

素因数分解:

$3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1223}}^1$

素因数の和:1273

約数の個数: 40

約数和(自身を含む): 37914624

約数和(自身を除く): 16417953

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 81, 93, 189, 217, 279, 567, 651, 837, 1223, 1953, 2511, 3669, 5859, 8561, 11007, 17577, 25683, 33021, 37913, 77049, 99063, 113739, 231147, 265391, 341217, 693441, 796173, 1023651, 2388519, 3070953, 7165557, 21496671]

約数ペア:

[(1, 21496671), (3, 7165557), (7, 3070953), (9, 2388519), (21, 1023651), (27, 796173), (31, 693441), (63, 341217), (81, 265391), (93, 231147), (189, 113739), (217, 99063), (279, 77049), (567, 37913), (651, 33021), (837, 25683), (1223, 17577), (1953, 11007), (2511, 8561), (3669, 5859)]