81257979

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:555

約数の個数: 32

約数和(自身を含む): 121478400

約数和(自身を除く): 40220421

約数列:

[1, 3, 11, 33, 73, 89, 219, 267, 379, 803, 979, 1137, 2409, 2937, 4169, 6497, 12507, 19491, 27667, 33731, 71467, 83001, 101193, 214401, 304337, 371041, 913011, 1113123, 2462363, 7387089, 27085993, 81257979]

約数ペア:

[(1, 81257979), (3, 27085993), (11, 7387089), (33, 2462363), (73, 1113123), (89, 913011), (219, 371041), (267, 304337), (379, 214401), (803, 101193), (979, 83001), (1137, 71467), (2409, 33731), (2937, 27667), (4169, 19491), (6497, 12507)]