21991542

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:197

約数の個数: 64

約数和(自身を含む): 48591360

約数和(自身を除く): 26599818

約数列:

[1, 2, 3, 6, 23, 37, 46, 59, 69, 73, 74, 111, 118, 138, 146, 177, 219, 222, 354, 438, 851, 1357, 1679, 1702, 2183, 2553, 2701, 2714, 3358, 4071, 4307, 4366, 5037, 5106, 5402, 6549, 8103, 8142, 8614, 10074, 12921, 13098, 16206, 25842, 50209, 62123, 99061, 100418, 124246, 150627, 159359, 186369, 198122, 297183, 301254, 318718, 372738, 478077, 594366, 956154, 3665257, 7330514, 10995771, 21991542]

約数ペア:

[(1, 21991542), (2, 10995771), (3, 7330514), (6, 3665257), (23, 956154), (37, 594366), (46, 478077), (59, 372738), (69, 318718), (73, 301254), (74, 297183), (111, 198122), (118, 186369), (138, 159359), (146, 150627), (177, 124246), (219, 100418), (222, 99061), (354, 62123), (438, 50209), (851, 25842), (1357, 16206), (1679, 13098), (1702, 12921), (2183, 10074), (2553, 8614), (2701, 8142), (2714, 8103), (3358, 6549), (4071, 5402), (4307, 5106), (4366, 5037)]