259837552

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{20479}}^1$

素因数の和:20561

約数の個数: 40

約数和(自身を含む): 551075840

約数和(自身を除く): 291238288

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1586, 3172, 6344, 12688, 20479, 40958, 81916, 163832, 266227, 327664, 532454, 1064908, 1249219, 2129816, 2498438, 4259632, 4996876, 9993752, 16239847, 19987504, 32479694, 64959388, 129918776, 259837552]

約数ペア:

[(1, 259837552), (2, 129918776), (4, 64959388), (8, 32479694), (13, 19987504), (16, 16239847), (26, 9993752), (52, 4996876), (61, 4259632), (104, 2498438), (122, 2129816), (208, 1249219), (244, 1064908), (488, 532454), (793, 327664), (976, 266227), (1586, 163832), (3172, 81916), (6344, 40958), (12688, 20479)]