20725856

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1229}}^1$

素因数の和:1287

約数の個数: 48

約数和(自身を含む): 44634240

約数和(自身を除く): 23908384

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 68, 124, 136, 248, 272, 496, 527, 544, 992, 1054, 1229, 2108, 2458, 4216, 4916, 8432, 9832, 16864, 19664, 20893, 38099, 39328, 41786, 76198, 83572, 152396, 167144, 304792, 334288, 609584, 647683, 668576, 1219168, 1295366, 2590732, 5181464, 10362928, 20725856]

約数ペア:

[(1, 20725856), (2, 10362928), (4, 5181464), (8, 2590732), (16, 1295366), (17, 1219168), (31, 668576), (32, 647683), (34, 609584), (62, 334288), (68, 304792), (124, 167144), (136, 152396), (248, 83572), (272, 76198), (496, 41786), (527, 39328), (544, 38099), (992, 20893), (1054, 19664), (1229, 16864), (2108, 9832), (2458, 8432), (4216, 4916)]