20181856

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1613}}^1$

素因数の和:1663

約数の個数: 48

約数和(自身を含む): 43926624

約数和(自身を除く): 23744768

約数列:

[1, 2, 4, 8, 16, 17, 23, 32, 34, 46, 68, 92, 136, 184, 272, 368, 391, 544, 736, 782, 1564, 1613, 3128, 3226, 6256, 6452, 12512, 12904, 25808, 27421, 37099, 51616, 54842, 74198, 109684, 148396, 219368, 296792, 438736, 593584, 630683, 877472, 1187168, 1261366, 2522732, 5045464, 10090928, 20181856]

約数ペア:

[(1, 20181856), (2, 10090928), (4, 5045464), (8, 2522732), (16, 1261366), (17, 1187168), (23, 877472), (32, 630683), (34, 593584), (46, 438736), (68, 296792), (92, 219368), (136, 148396), (184, 109684), (272, 74198), (368, 54842), (391, 51616), (544, 37099), (736, 27421), (782, 25808), (1564, 12904), (1613, 12512), (3128, 6452), (3226, 6256)]