257198474

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{659}}^1\times {\mathrm{883}}^1$

素因数の和:1574

約数の個数: 32

約数和(自身を含む): 441080640

約数和(自身を除く): 183882166

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 659, 883, 1318, 1766, 8567, 11203, 11479, 15011, 17134, 22406, 22958, 30022, 145639, 195143, 291278, 390286, 581897, 1163794, 7564661, 9892249, 15129322, 19784498, 128599237, 257198474]

約数ペア:

[(1, 257198474), (2, 128599237), (13, 19784498), (17, 15129322), (26, 9892249), (34, 7564661), (221, 1163794), (442, 581897), (659, 390286), (883, 291278), (1318, 195143), (1766, 145639), (8567, 30022), (11203, 22958), (11479, 22406), (15011, 17134)]