18971264

素因数分解:

$2^7\times {\mathrm{13}}^2\times {\mathrm{877}}^1$

素因数の和:917

約数の個数: 48

約数和(自身を含む): 40971870

約数和(自身を除く): 22000606

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 169, 208, 338, 416, 676, 832, 877, 1352, 1664, 1754, 2704, 3508, 5408, 7016, 10816, 11401, 14032, 21632, 22802, 28064, 45604, 56128, 91208, 112256, 148213, 182416, 296426, 364832, 592852, 729664, 1185704, 1459328, 2371408, 4742816, 9485632, 18971264]

約数ペア:

[(1, 18971264), (2, 9485632), (4, 4742816), (8, 2371408), (13, 1459328), (16, 1185704), (26, 729664), (32, 592852), (52, 364832), (64, 296426), (104, 182416), (128, 148213), (169, 112256), (208, 91208), (338, 56128), (416, 45604), (676, 28064), (832, 22802), (877, 21632), (1352, 14032), (1664, 11401), (1754, 10816), (2704, 7016), (3508, 5408)]