18720128

素因数分解:

$2^7\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1229}}^1$

素因数の和:1267

約数の個数: 64

約数和(自身を含む): 45165600

約数和(自身を除く): 26445472

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 128, 136, 224, 238, 272, 448, 476, 544, 896, 952, 1088, 1229, 1904, 2176, 2458, 3808, 4916, 7616, 8603, 9832, 15232, 17206, 19664, 20893, 34412, 39328, 41786, 68824, 78656, 83572, 137648, 146251, 157312, 167144, 275296, 292502, 334288, 550592, 585004, 668576, 1101184, 1170008, 1337152, 2340016, 2674304, 4680032, 9360064, 18720128]

約数ペア:

[(1, 18720128), (2, 9360064), (4, 4680032), (7, 2674304), (8, 2340016), (14, 1337152), (16, 1170008), (17, 1101184), (28, 668576), (32, 585004), (34, 550592), (56, 334288), (64, 292502), (68, 275296), (112, 167144), (119, 157312), (128, 146251), (136, 137648), (224, 83572), (238, 78656), (272, 68824), (448, 41786), (476, 39328), (544, 34412), (896, 20893), (952, 19664), (1088, 17206), (1229, 15232), (1904, 9832), (2176, 8603), (2458, 7616), (3808, 4916)]