21431290

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{1103}}^1$

素因数の和:1206

約数の個数: 32

約数和(自身を含む): 40538880

約数和(自身を除く): 19107590

約数列:

[1, 2, 5, 10, 29, 58, 67, 134, 145, 290, 335, 670, 1103, 1943, 2206, 3886, 5515, 9715, 11030, 19430, 31987, 63974, 73901, 147802, 159935, 319870, 369505, 739010, 2143129, 4286258, 10715645, 21431290]

約数ペア:

[(1, 21431290), (2, 10715645), (5, 4286258), (10, 2143129), (29, 739010), (58, 369505), (67, 319870), (134, 159935), (145, 147802), (290, 73901), (335, 63974), (670, 31987), (1103, 19430), (1943, 11030), (2206, 9715), (3886, 5515)]