21852985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1831}}^1$

素因数の和:1885

約数の個数: 32

約数和(自身を含む): 33767424

約数和(自身を除く): 11914439

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 1831, 2387, 9155, 11935, 12817, 20141, 56761, 64085, 100705, 140987, 283805, 397327, 624371, 704935, 1986635, 3121855, 4370597, 21852985]

約数ペア:

[(1, 21852985), (5, 4370597), (7, 3121855), (11, 1986635), (31, 704935), (35, 624371), (55, 397327), (77, 283805), (155, 140987), (217, 100705), (341, 64085), (385, 56761), (1085, 20141), (1705, 12817), (1831, 11935), (2387, 9155)]