21220108

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{601}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 46252864

約数和(自身を除く): 25032756

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 97, 182, 194, 364, 388, 601, 679, 1202, 1261, 1358, 2404, 2522, 2716, 4207, 5044, 7813, 8414, 8827, 15626, 16828, 17654, 31252, 35308, 54691, 58297, 109382, 116594, 218764, 233188, 408079, 757861, 816158, 1515722, 1632316, 3031444, 5305027, 10610054, 21220108]

約数ペア:

[(1, 21220108), (2, 10610054), (4, 5305027), (7, 3031444), (13, 1632316), (14, 1515722), (26, 816158), (28, 757861), (52, 408079), (91, 233188), (97, 218764), (182, 116594), (194, 109382), (364, 58297), (388, 54691), (601, 35308), (679, 31252), (1202, 17654), (1261, 16828), (1358, 15626), (2404, 8827), (2522, 8414), (2716, 7813), (4207, 5044)]