21481761

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3167}}^1$

素因数の和:3213

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 15013599

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 323, 357, 399, 969, 2261, 3167, 6783, 9501, 22169, 53839, 60173, 66507, 161517, 180519, 376873, 421211, 1022941, 1130619, 1263633, 3068823, 7160587, 21481761]

約数ペア:

[(1, 21481761), (3, 7160587), (7, 3068823), (17, 1263633), (19, 1130619), (21, 1022941), (51, 421211), (57, 376873), (119, 180519), (133, 161517), (323, 66507), (357, 60173), (399, 53839), (969, 22169), (2261, 9501), (3167, 6783)]