257423915

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{1901}}^1$

素因数の和:2039

約数の個数: 32

約数和(自身を含む): 364818816

約数和(自身を除く): 107394901

約数列:

[1, 5, 7, 35, 53, 73, 265, 365, 371, 511, 1855, 1901, 2555, 3869, 9505, 13307, 19345, 27083, 66535, 100753, 135415, 138773, 503765, 693865, 705271, 971411, 3526355, 4857055, 7354969, 36774845, 51484783, 257423915]

約数ペア:

[(1, 257423915), (5, 51484783), (7, 36774845), (35, 7354969), (53, 4857055), (73, 3526355), (265, 971411), (365, 705271), (371, 693865), (511, 503765), (1855, 138773), (1901, 135415), (2555, 100753), (3869, 66535), (9505, 27083), (13307, 19345)]