21359667

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:160

約数の個数: 64

約数和(自身を含む): 37601280

約数和(自身を除く): 16241613

約数列:

[1, 3, 7, 17, 19, 21, 47, 51, 57, 67, 119, 133, 141, 201, 323, 329, 357, 399, 469, 799, 893, 969, 987, 1139, 1273, 1407, 2261, 2397, 2679, 3149, 3417, 3819, 5593, 6251, 6783, 7973, 8911, 9447, 15181, 16779, 18753, 21641, 22043, 23919, 26733, 45543, 53533, 59831, 64923, 66129, 106267, 151487, 160599, 179493, 318801, 374731, 418817, 454461, 1017127, 1124193, 1256451, 3051381, 7119889, 21359667]

約数ペア:

[(1, 21359667), (3, 7119889), (7, 3051381), (17, 1256451), (19, 1124193), (21, 1017127), (47, 454461), (51, 418817), (57, 374731), (67, 318801), (119, 179493), (133, 160599), (141, 151487), (201, 106267), (323, 66129), (329, 64923), (357, 59831), (399, 53533), (469, 45543), (799, 26733), (893, 23919), (969, 22043), (987, 21641), (1139, 18753), (1273, 16779), (1407, 15181), (2261, 9447), (2397, 8911), (2679, 7973), (3149, 6783), (3417, 6251), (3819, 5593)]