30990813

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1847}}^1$

素因数の和:1921

約数の個数: 32

約数和(自身を含む): 51093504

約数和(自身を除く): 20102691

約数列:

[1, 3, 7, 17, 21, 47, 51, 119, 141, 329, 357, 799, 987, 1847, 2397, 5541, 5593, 12929, 16779, 31399, 38787, 86809, 94197, 219793, 260427, 607663, 659379, 1475753, 1822989, 4427259, 10330271, 30990813]

約数ペア:

[(1, 30990813), (3, 10330271), (7, 4427259), (17, 1822989), (21, 1475753), (47, 659379), (51, 607663), (119, 260427), (141, 219793), (329, 94197), (357, 86809), (799, 38787), (987, 31399), (1847, 16779), (2397, 12929), (5541, 5593)]