21704308

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 43001280

約数和(自身を除く): 21296972

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 107, 157, 214, 314, 323, 428, 628, 646, 1292, 1819, 2033, 2669, 2983, 3638, 4066, 5338, 5966, 7276, 8132, 10676, 11932, 16799, 33598, 34561, 50711, 67196, 69122, 101422, 138244, 202844, 285583, 319181, 571166, 638362, 1142332, 1276724, 5426077, 10852154, 21704308]

約数ペア:

[(1, 21704308), (2, 10852154), (4, 5426077), (17, 1276724), (19, 1142332), (34, 638362), (38, 571166), (68, 319181), (76, 285583), (107, 202844), (157, 138244), (214, 101422), (314, 69122), (323, 67196), (428, 50711), (628, 34561), (646, 33598), (1292, 16799), (1819, 11932), (2033, 10676), (2669, 8132), (2983, 7276), (3638, 5966), (4066, 5338)]