21105994

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1303}}^1$

素因数の和:1414

約数の個数: 32

約数和(自身を含む): 39432960

約数和(自身を除く): 18326966

約数列:

[1, 2, 7, 13, 14, 26, 89, 91, 178, 182, 623, 1157, 1246, 1303, 2314, 2606, 8099, 9121, 16198, 16939, 18242, 33878, 115967, 118573, 231934, 237146, 811769, 1507571, 1623538, 3015142, 10552997, 21105994]

約数ペア:

[(1, 21105994), (2, 10552997), (7, 3015142), (13, 1623538), (14, 1507571), (26, 811769), (89, 237146), (91, 231934), (178, 118573), (182, 115967), (623, 33878), (1157, 18242), (1246, 16939), (1303, 16198), (2314, 9121), (2606, 8099)]